Thanks to
Chessdom:
"The dates proposed in the Bulgaria bid are 5 - 24 April 2010, and the venue will be NDK in Sofia. It is the same building where the Topalov - Kamsky, but the playing room will be Hall 1, with capacity of 3800 people. "
I suppose it was thought that this venue would indeed be the winning bidder. Topalov and Anand both want the venue (or maybe it's better to say ... "are fine with the venue"). But now we see there are more bids that have come in.
"Mr. Ginchev revealed for Chessdom.com that Bulgaria is not the only candidate for hosting the event. 'Until this moment there are two more official bids in the FIDE central - one from Singapore and one from Turkey.'"
I could have predicted that Turkey would make a bid ... after the speech against the European Chess Union given by the Turkish federation president.
At any rate: "The bidding process is still open and applications can be submitted until September 30th. On October 1st FIDE will open all applicant letters and on October 9th the winning bid will be announced."
Don't forget to read the
full Chessdom article.