Last Updated: May 3rd, 2011
Update: I know that most of you have not yet received the update, and now we know why. According to its Twitter page, Motorola has said that it would be "rolling out in phases", so hopefully you'll start to see some update action soon.
Well, what do you know? It looks like one update wasn't enough for AT&T today - there are now two OTA updates available for the Motorola Atrix 4G, the second of which brings some long-awaited features.
Last Updated: April 27th, 2011
Motorola has had a dark past when it comes to bootloaders. Apart from a couple exceptions (most notably, the XOOM), all of the major Motorola devices have had locked bootloaders, and thus, Android customization enthusiasts have been shut out from such tweaks as custom kernels.
Recently, there has been quite an outcry directed at Motorola and their bootloader policy, in the form of petitions and hijacked polls, and it looks like they have heard users' requests.