The Wikimedia Foundation has released the official Wikipedia app for Android. Tomasz Finc of Wikimedia in a soft launch announcement said:

I’m happy to report that we’ve finished our released candidates and that this afternoon we’ll be submitting version 1.0 of the Wikipedia Android application for a very quiet launch. I stress .. a very quiet launch. We don’t want any large publicity at first. Our current plan is to push to the Google market today, Amazon & F-Droid market next week, and to do PR after we see the reviews coming in late next week. That way we have time to do any fixes or workflow tweaks.

The official Wikipedia app for Android is available for download at the Android Market.