jfruhlinger writes "One of the complaints about Android is its fragmentation; many different versions of the OS are out there in the wild, and often users are held back from upgrading by their hardware or their carrier. But now a disturbing rumor has it that Samsung is strong-arming T-Mobile to prevent an over-the-air upgrade to Android 2.2 (Froyo) for Samsung Vibrant owners. The reason? Samsung wants people to shell out for the new Vibrant 4G — which, other than the fact that it ships running Froyo, is largely identical to the Vibrant."
Reader CWmike contributes an informative link if you'd like to know which Android vendors are actually delivering timely upgrades