I don't think the bootloader will be encrypted on this phone. I have no inside information or anything, it's just my guess. For one thing, Moto has said they will stop encrypting them, and are already unlocking the Atrix. Also, it just doesn't seem to make sense to put vanilla Android on it then lock it down. Again, just my feeling.
I know some devs will definitely want to work on this phone. (assuming it's not encrypted of course). The guys at prepaidandroids.org are already checking it out.
"Machete don't text"