Dropbox recently announced Carousel for iOS and Android. It is an interesting offering and with the proliferation of digital photography, it looks like it might be a great offering.
Dropbox is no longer the only serious contender in the space of those providing cloud base storage. Many others have entered the market and are substantially less expensive and just as easy to use. It appears that dropbox is aware of the competition and working hard to add features that will continue to separate it from the every more crowded cloud storage service provider market.