Joystiq mentions that Blizzard has moved staff from the Console Department into the PC games depatment.  This added to the job openings requiing RTS games experience, a level designer with knowledge of Starcraft and Warcraft campaigns, and of course, the Cinematic animator job opening released recently seems to point out to a possible Starcraft and Warcraft 4 in the horizon.  Note how Blizzard talks in plural about games in production.

However, Joystiq points out a tragical fate for Starcraft: Ghost … “the transition away from consoles is just another nail in Starcraft: Ghost’s coffin.”