The official Doctor Who website has confirmed that The Christmas Invasion will be broadcast in the UK on BBC1 at 7pm on Sunday, December 25, as Outpost Gallifrey previously noted was the likely timeslot. (Other websites have suggested an earlier timeslot, which is incorrect.)

Additionally, the CBC network in Canada has confirmed they will air "The Christmas Invasion" on Monday, December 26 at 8pm, according to the network's program guide.

As it did with last year's episodes, the BBC Press Office today has issued a new press pack with details of the forthcoming Doctor Who special "The Christmas Invasion". In addition to carrying the full synopsis of the episode on its first page (you can skip it if you don't want to know by starting on page two), the release profiles David Tennant andBillie Piper.

Some quotes from David Tennant: "It was funny, when I first got asked I just laughed! I found it hilarious and impossible! And I remember Russell, very perceptively, saying: 'Don't say anything now, because I know the experience is quite a weird one. But it's such a great job! I [mean], I get to play a Time Lord and have a TARDIS: you can't knock that! ... The fantastic thing about the regeneration process is that every time the Doctor goes through it, he changes to an extent. So as an actor, you get to work on a blank canvas where you don't have to worry too much about what has gone before. It's interesting, because he's always going to be the moral egalitarian, humanitarian, slightly wild, slightly anarchic bloke that he's always been. But because he's getting older he's moving on. He's seen it all before, every alien creature with a superiority complex. Viewers are going to see a slightly more no-nonsense Doctor and that is influenced by what Chris did with him. We are more aware that he's someone who fought a war, lost all his people and because he's the last Time Lord, the last authority in the universe, he's less indulgent, more ruthless. ... I wanted something that I'd enjoy wearing, an outfit that would look good and feel right. We also wanted something that was modern, without being specifically en vogue. I wasn't trying to create a Times Style article about it, but I'm glad people like it so much. I also wanted an outfit that wasn't too authoritarian. So that's why I opted for a scruffier-styled suit. It's more what you'd expect to see a student sporting than a college professor. And inevitably the look is influenced by the sort of things I like wearing. ... The regeneration process is a severe biological process which takes a fair bit of time. This is not good news for Rose and the rest of the world, because whilst he's going through this, the earth is being invaded by the Sycorax. It's a very difficult time for Rose. He hadn't prepared her for the changes he'd undergo. So whilst the Doctor is recuperating, Rose is trying to fathom out how she can save the world. She's also trying to understand how she feels about him now. ... The Christmas episode is a new start for the Doctor and Rose. They've got to rediscover each other and decipher whether they still feel the same about one another. Despite the new face, he is fundamentally the same bloke, he's still the Doctor and still has a huge amount of affection for her. However, it's not just the way he looks or the way he talks that is different. The Doctor's outlook on life has changed, as has the way he tackles situations. I think he's just hoping Rose can accept the changes and they can pick up where they left off."

From Billie Piper: "[Winning at the NTA awards] was the most amazing feeling.; I was so terrified and really thought one of the soap actresses would win. But when they said it was me, I was just amazed. It was such a strange, wonderful evening. I felt like I was having an out of body experience. .... Rose feels so unloved and isolated at the start of [The Christmas Invasion]. She's returned home to her mother and Mickey and as ever they are there for her. But she feels like she's lost her best friend. The earth is being invaded and Rose has no control over the situation. The Doctor, who is still going through the regeneration process, isn't there to give her the answers and she's scared. ... Kids love being scared. It's something I've learned since starting on Doctor Who. As adults we worry that kids can't cope with anything scary and that everything should be censored. But that is nonsense. Children are so inquisitive, and I'm sure will be asking themselves questions such as 'What if the tree came to life?' etc. It excites them. Part of the series' success is it challenges the viewers' imaginations, including the kids. ... Rose is very smart. She's very instinctive and has great strength of character. She's travelled all over the galaxy with the Doctor, and taken note of how he handles situations, so tries to mimic his actions. It's very amusing to see Rose trying to copy the Doctor, but she looks up to him. He's her best friend, her personal hero and she believes in him, so tries to act like him. Rose is so scared he won't want her to travel with him anymore. She has spent so much time with him, experiencing new and exciting worlds. She can't bear the thought that this could be the end and the thought of going back to reality, working in a shop, fills her with dread. ... I'm an absolute Christmas freak! I love the fact it starts in October now! However, this year for me it started in July as we were filming the Christmas special. It was slightly bizarre filming snow scenes in the middle of summer, but I was thrilled. It was great to start filming series two with this amazing, emotional and scary episode. I'm a huge fan of Christmas specials. It means so much to me that our show is going to go out on Christmas Day when all the families will be sitting down together, eating copious amounts of chocolate and drinking sherry. I have to be honest - I think I'm going to need a few sherries before I sit down to watch it, though!"

The new issue of Doctor Who Magazine (#363) reveals another stunning development for the series: immediately after broadcast of 'The Christmas Invasion', digital viewers (digital, cable or Freeview) "will be invited to 'press their red buttons' to join the Doctor on a new adventure," meaning an additional special episode for the time period between the airing of the Christmas special and the start of series two. Written by Gareth Roberts and starring David Tennant (who has already filmed scenes for it), the digital feature is directed by Ashley Way and produced by Sophie Fante "in conjunction with the Doctor Who production team". According to executive producer Julie Gardner, "This is being treated as a full-blooded, sophisticated production, with [...] a brand new alien villain [...] and brand new sets [...] Viewers will even be able to use their remotes to fly the TARDIS!"

Meanwhile, the episode also discusses the new Children in Need special, which is written by Russell T Davies and directed by Euros Lynn: "it's a proper piece of Doctor Who - meaning it's not a spoof, or an interview, or a preview of the Christmas episode, or a [...] look behind the scenes; it's genuine new Doctor Who! [...] we've been planning this for months."

DWM confirms that Block Three of production, directed by Graeme Harper, is under way. Episode 5 is not called 'Parallel Worlds' (the real title is not revealed). Episode 4 ("The Girl in the Fireplace") will feature Angel Coulby as Katherine.

Finally, the new series has debuted in France on the new digital channel France 4. Says the official Doctor Who website, "To celebrate the Time Lord's arrival in France, Executive Producers Russell T Davies and Julie Gardner launched the show in Paris, and have been speaking to everyone from cutting edge trendsetters, Inrockuptibles and Technikart, through to all the national listings weeklies and even French National Radio. Hopes are high for Doctor Who - the French have a tradition for taking such shows to their hearts (they had four Buffy magazines), and it's part of a high-profile launch line up for their trendiest new digital channel." The site also confirms that the series will arrive in Italy later this month.

The first photos taken from location work on the second series of Doctor Who have made their way to the Internet: what appears to be a Czech photo archive of David Tennant pictures from the Splash News photo service, including pictures of Tennant and Piper rehearsing and some eerily decorated Santas that appear to be aliens or zombies beneath. The photos can be found by clicking here; the first 13 in the set are the ones from this filming, with other shots of Tennant in other locales. (Don't bother registering for larger photos; you won't be able to gain entry.)

UPDATE: A second collection of images from official press photographers is online, from the World Entertainment News Network; you can click here to view them. These also include Camille Coduri and Noel Clarke as well as David Tennant and Billie Piper.