Engadget reports that Apple has released iOS 6.0.2, which promises an unspecified fix to WiFi usage. If you've been having issues with WiFi, you'll want to see about updating right away. Most of us on the TUAW staff have been getting error messages when checking for the update using over-the-air updates. If you run into that, try updating through iTunes.
Apple iPad Air 2
Apple iPhone 6s