The official Gmail blog just posted a pretty lengthy entry explaining the changes to their newly updated Gmail app for iOS. While the update doesn't seem to be a huge one, it does bring some much wanted additions -

  • Nested Label Improvements
  • (iOS 5 only) A new custom sound for sound notifications
  • Mobile Signature and Vacation Responder, accessible via the gear settings icon at the top of the menu view
  • Numerous bug fixes and UI improvements

I personally have my Gmail account set up via the native mail app and that works fine for me. If you're a hardcore Gmail user that lives by labels and the "Gmail way" of handling mail, this is an update you'll most likely want to check out. The Gmail app for iOS is available for free in the App Store and the update is available now.