I asked the same question a few months ago, but no worries...
... at that time Jennifer responded that it was something that was under consideration, but that there were other things to address first. But maybe one of t'management will be able to give us the current situation.
'S my birthday in October and the only thing on the list was a Kindle 3G. However, after yesterday's announcement about the new Kindle tablet I think I'll mark-time until I find out a bit more about that. No UK availability date yet, of course.