If you have not yet heard about Adobe's new business plan ?
Photoshop CS6 release is said to be last full release. CS7 and CS suites will be cloud based and you will have to pay monthly. Its a permanent change in Adobe's pricing model. I think Light Room and Elements are still single upgrades (not cloud based)
They are initially offering current http://www.adobe.com/
They are offering deep discounts for current users to cross over to using Cloud upgrade downloads
Monthly Rates found here
We can't afford this new business method
Frequently ASKed questions.