I liked the Mashable.com article iPad 2 Rumors: The Comprehensive Guide. Based on that, the best 10 rumors are as follows:
1. There will be three versions of the iPad 2
2. iPad 2 will have a front and back-facing cameras
3. iPod 2 will be slimmer, lighter and will have retina display
4. iPod 2 will have a flat back
5. iPod 2 will have a wide-range speakers
6. iPod 2 will have a USB port
7. iPod 2 will have a dual-core CPU
8. iPod will have a gyroscope
9. There will be a 7-inch version of the iPod
10. iPod 2 will be available around March, April time