A BioShock announcement will be made at 1pm BST today, Irrational Games boss Ken Levine has revealed.

Posting on Twitter about the imminent announcement, Levine wrote: "My prediction for tomorrow: Some people will be FURIOUS! Some people will be excited. Some people will be singer Robin Thicke."

He also confirmed that the announcement definitely won't be PS Vita related, with any such project seemingly some way off.

"Today NOT about Vita," wrote Levine. "I'm still working on the matchmaking of that deal, no promises whatsoever. Out of my hands. So vent your spleen now."

Three DLC packs are promised as part of the BioShock Infinite Season Pass, offering new stories, new characters and new weapons.

Source: Facebook and @IGLevine