The surprise was revealed today by JayWalker, who is apparently helping out the Chronic Dev Team with GreenPois0n. I hope you didn’t have your hopes too high up there because you’re going to be disappointed as JayWalker confirmed that the surprise is custom animated boot logos…
The current plan is for this animation to be available for your boot animation via Cydia. Additionally you will have source to make your own.
A video was also posted on YouTube. Spoiler alert: this is a boring video! Skip to 1.49 to see the animated logo work for just about a second.
So, was this the big surprise you were expecting?