The Czech Film Commission has posted an update on when filming for Wanted begins:
The Universal Pictures’ action movie Wanted is another major production hosted by the Czech Republic and the local co-producer Stillking Films (www.stillking.com), directed by the Moscow based Timur Bekmambetov, who is also known for his international sensations Nightwatch and Daywatch, two of the biggest grossing films ever in Russia. Wanted begins shooting in April for 12 weeks, starring Morgan Freeman and James McEvoy.
Source: Czech Film Commission