I haven't seen anything yet but just keep looking on these forums and eventually it will probably show up somewhere. Just be patient. They always say that good things come to those who wait.
There is really not much point. With a locked bootloader we can not have a Jelly Bean kernel so we won't have a true Jelly Bean experience. No 100% fully functional Google Now and no Project butter. Best we can have is Jelly Bean system with an ICS kernel and it will probably be very buggy at first.