Firstly, this information was read on the modmyi website, the maker of the 3.1.3 jailbreak comex has revealed that his "spirit" jailbreak is also going to be made public to jailbreak all 4.0 the VERY near future.

Also musclenerd and planetbeing from the dev-teamare hard at work using comex's jailbreak, on the iphone 4 to create an unlock aswell before they make it public.

So all those waiting for jailbreak's and unlock's on all idevice's.......stay tuned!