Adobe Photoshop Express Beta has been released and seems to be following in the tracks of many new implementations of web applications such Aviary and Buzzword. They are currently offering a test drive option so you can go right in a play around, or you can register to get your own little space on there.
It seems like this is going to be a very useful application, it allows you not only to store you images online but also retouch them (and more). Adobe has included all of the standard functionality of online photo gallery application, including slide-shows and captions. They have also included a bunch of useful editing tools to touch up your photos. All-in-all it is a great direction and I have a feeling that this is just the tip of the iceberg.