I've never had this problem with Beagle Boards and sources. Sure the kernel or u-boot that ship with them might be slightly older but sources have always been

I've never had this problem with Beagle Boards and sources. Sure the kernel or u-boot that ship with them might be slightly older but sources have always been available. And TI are quite decent at contributing to the upstream kernel and u-boot trees. Generally only a few months after a new TI SoC is announced there's enough support in the upstream u-boot and kernel to boot the board and do some useful things. Generally by the time silicon is buyable by mere mortals mainline is in pretty decent shape.