Rovio sure does love to tease its millions of worldwide fans and adorers. The Finnish developer has just posted the below image on Twitter along with the caption "Who turned out the lights?"

Now, it doesn't take a rocket scientist to work out that those eyes belong to a female (just check out the eyelashes). What we don't know, though, is whether these peepers belong to a miffed avian or a unscrupulous piggy.

Either way, we presume Rovio will soon introduce an all-new character into its feather-flinging franchise.

If it is a new character, it's possible that she'll be introduced in the next Angry Birds Space update, which Rovio has revealed will unlock a new planet: Mars.

To be honest, who knows. What do you think?