It was a shame that Droid X didn't launch with Android 2.2, but owners won't have long to wait for Froyo: a Motorola employee let slip that it'll be deployed by early September.
The statement came in the company's official message forum, where user Matt explained:
Some Droid X users are experiencing an issue using Exchange 2003 email. Though the email is arriving on the Droid X, no notifications are appearing. A fix for this will be included in the upgrade to Android 2.2 scheduled for deployment by early September.
Emphasis his. Good timing, with Evo 4G having already gotten its update and Droid 2 expected to launch this month with Android 2.2 already on board. [Motorola Support Forums via BGR]