The BBC released a press release on the status of Series 4 and 5 of Doctor Who. Series Four will air in 2008 which will include a Christmas Special. There will be 3 specials starring Tennant in 2009. Series Five will then air in 2010. This is to allow David Tennant to be able to appear in Hamlet at the Royal Shakespeare Company in the latter half of 2008 along with Patrick Stewart as Claudius.