Vesterbacka substantiates speculation on twitter by mentioning new title

Rovio has teased the studio’s first post-Angry Birds title in a video thanking users for one billion downloads of its flagship franchise.
The Finnish studio’s CEO Peter Vesterbacka appears to have substantiated the speculation on his twitter account by retweeting a story related to the mater.

The game in question refers to an image in the background of a balloon attached to a mechanism, ready to be cut by a pair of scissors.