An intriguing image posted on Rovio's Facebook page has started the rumour mill turning: is the Finnish gaming goliath planning to finally add a level creator to Angry Birds?

The picture posted by Rovio could just be another cute Angry Birds image, but the contents of the image and the caption that accompanies it ("Decisions, decisions, decisions") do hint at an upcoming level creator.

This rumour comes mere weeks after another rumour began to circulate suggesting that Rovio has plans to create a new Angry Birds spin-off game that would allow the players to control the pigs.

The incorporation of a level creator into the world of Angry Birds is by no means beyond the realms of possibility, given how much prominence Rovio has afforded the level editor in its latest game, Amazing Alex.

We will, of course, keep our eyes peeled for any news about this rumour. And then let you know.