The iOS Wikipedia Beta app, v4.0.7.5 was released yesterday via TestFlight.
If you would like to be able to do some testing on your own iOS 8 device,
please do the following:
1. Install the TestFlight app via the App Store
2. When you open the TestFlight app, it will show the Apple ID that's
logged in.
3. Email me directly with the Apple ID (email address) observed in Step 2,
and I'll add you to the "external" TestFlight beta testers group.
-Adam