Carmageddon's Official Website has a countdown timer enacted for a 00:00:00 count on June 1.

There are no details regarding the reason for the timer but rumors are that a new game will be announced. It would not be surprising if Carmageddon released a new game in the series seeing as how Twisted Metal is getting a reboot(sequel.)

We'll keep you posted. Carmageddon's license is currently held by Square Enix.