nope! but i've been using palringo (palringo.com) for fb chat on my Bold. only discovered thanks to poster on the fb 1.5 thread. been after something for a while as fb banned in work, and this works pretty well.
I need to stop reading forums online!! Now I've got three pieces of software I'm anxiously waiting for (BeeJive w/Facebook, Google Voice, and BB Facebook 1.5)