Bad news root crew, the DROID 3 has a locked bootloader
It seems like an inevitable outcome that we should have expected once we learned that the DROID 3 would feature an OMAP processor, but it has been confirmed that the DROID 3 has a locked bootloader. The news was confirmed on the Motorola Support Forums this morning by a forums manager named Matt.
Motorola has said that it would be offering software updates to unlock bootloaders starting late in 2011. Unfortunately, it's barely mid-2011 right now, so change is still on the horizon for all except Atrix users, who apparently should have unlocked bootloaders with the Gingerbread update.
Since the DROID 3 is packing an OMAP processor, that means it most likely has eFuse built in which will brick your phone if you attempt to unlock it. That said, eFuse isn't a death sentence for rooting. The DROID X wasn't able to be unlocked, but it did get rooted a few weeks after launch.
We'll keep an eye on the developer forums for any more news, but if you're looking for easy unlocking and rooting, Motorola still isn't the manufacturer for you.