So do we have it or not?? I asked the question in development thread, but there's not much traffic there and I didn't get a confirmation.
I can't believe no one has tried it yet. If it is actually possible - the instructions on this site should work:
Even if you don't want to unlock the bootloader - if someone could try it. If it works it will give you warnings and the option to opt out before going all the way, if it doesn't work - you won't even get that far.