You can now officially pre-order Adobe Creative cloud. It is $70 month by month or $50 a year, and will supposedly have a $30 a month special offer for people who own a creative suite, production bundle or the Master Collection, though that part of the site doesn’t quite work as of yet. And it will be out within a month, though will continue to evolve over it’s life and has additions that even the Master Collection doesn’t have live Device and PC Sync, Cloud Storage, Business Catalyst, Typekit, Story plus, Adobe Muse and Adobe Edge.
That and the ability to get Beta version of their software when new features will be released, and have access to every app (though Lightroom will take longer to join the cloud for some strange reason)makes this the way to go for Creative Suite users.
You can see their product comparison to see what comes in which version of the suite.