You can download the update directly on your device through the Apple App Store or by using the following link:
StumbleUpon for iOS version 3.2 has the following new features and improvements:
- Create and edit Lists and add pages to Lists while you Stumble
- Share Lists with your friends and follow their Lists
- Notifications when you receive a Share or a new Follower
- Explore over 500+ Interests and keywords using Explorer Box