The second half of Doctor Who's seventh series will premiere tonight on BBC One in the UK and BBC America in the US. But today's biggest Doctor Who news isn't about new episode "The Bells of Saint John" -- it's about the upcoming 50th anniversary special, which airs in November. And it's very big news indeed.
David Tennant is making his return to Doctor Who.
Now that you've presumably returned to your computer following several minutes of wild cheering, here's some more news: he'll be joined in the special by Billie Piper, the actress known for playing Rose Tyler in the 2005 and 2006 series of the show.
Both Tennant and Piper last appeared in the 2010 New Years' special, "The End of Time," which saw the Tenth Doctor bid goodbye to Rose before regenerating into the Eleventh (and current) Doctor, played by Matt Smith. Tennant and Piper will appear alongside Smith's Doctor and new companion Clara (Jenna-Louise Coleman).
Actor John Hurt -- known for his diverse filmography, including Alien, V for Vendetta, and Harry Potter -- is also slated to be a guest star in the special.
Whether or not Tennant is the only previous Doctor to appear in the special remains unknown. Ninth Doctor Christopher Eccleston has been vocally negative about his time on the series, but older incarnations of the Doctor have expressed interest in returning.
We shouldn't rule anything out at this point, but most fans should be happy to see Tennant (one of the most beloved actors to inhabit the role) return. I personally can't wait to see how he interacts with the Eleventh Doctor -- that'll be the real treat of Tennant's return.
Doctor Who airs "The Bells of Saint John" tonight on BBC One in the UK and BBC America in the US.