A story by Digitimes suggests that Honeycomb will be announced in March. Here is the quote (emphasis ours):
On the other hand, MSI is set to display its 10-inch Wintel-based tablet PC as well as engineering samples of its ARM-based Google Android model. MSI is also prepared to sell an Nvidia Tegra 2-based model in April or May after Google releases Android 3.0 in March.
OK, this is Digitimes we're talking here, with its usual unsourced vagueness. It's not the New York Times, or the St. Pete Times. Or the Times of Trenton. So a big ol' grain of salt is required. But we'll more than likely see Honeycomb officially at some point in the earlier part of the year. [Digitimes]