We originally helped break this news a week ago, and today Motorola took to Twitter to confirm that the Cliq will receive and upgrade to Android 2.1. (Actually, @motomobile initially said it'd be a 2.0 upgrade, but they went back and corrected themselves.)
A date for the upgrade has yet to be announced.
Update: For what it's worth, @motomobile has also confirmed the Droid will get 2.1. Which we also reported last week. lol (thanks, Chris!)