Digitimes is reporting that Google will release Android 3.0 (Honeycomb) in March. The statement is found in an article that looks at the tablet plans for a number of manufacturers (ECS, Asustek, and MSI).
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.
As the report suggests, this would translate to a street date of April or May for many of these devices as manufacturers will need time to complete the configuration of their new tablets with the new OS.