This is the second installment in the Gallery 2 beta cycle. In the past 5 weeks we've made considerable improvements to the product. We're one step closer to having a final product. As with the beta-1 release, we are now providing a well tested upgrade path from here until the final Gallery release. If you're using Gallery 2 Alpha 4 or more recent, you can upgrade without losing any of your data.
As before, this is a technology release so that we're providing you can get an idea of how the product is maturing. It is stable and reliable, but does not yet have all the features that you will find in Gallery 1.x. Download the latest code and play with it! Before you ask for help, please, please read the README -- we've made an effort to answer all of your questions there. Especially read the known issues section. If you're upgrading, be sure to read the instructions. Then head on over to the G2 Forums and let us know what you think!