From Unwired View:
The article also claims that pre-Honeycomb tablets won't be upgraded:According to Mobile-Review?s Eldar Murtazin, Google is indeed working on it?s own branded tablet, which is scheduled for release sometime in mid-summer or early fall. Upon release, this device will get the latest Android 3.x version of OS, which will become available to partners only after Google?s tablet is out. This time the hardware partner making the tablet for Google, is LG.
There was also one more interesting quip about Android 3.0 in Eldar?s article. According to him, if a hardware partner releases the tablet on Android 2.x version of OS, as per licensing agreement for Android 3.0, they are not allowed to update Android 2.x tablets to 3.0 version.