Those of you wanting to skip over CS6 might need to reconsider.
You will probably need to have CS6 to upgrade to CS7.
That's been hinted.
I will do you one better, and I am thinking that CS7 may be subscription only. A lot of software vendors are starting to see push back on the upgrade cycle and many people are 2 or more versions behind... There are a ton of say Windows XP machines still out there, and I still see people using PS 6 even.
Adobe also does not play fair with their antiquated products. For Acrobat Pro for example, we have seen issues with older full versions that run into crashes or hang ups because of update endless loops, i.e. searches for updates, and since product is now sunsetted, product basically will lock up.
As incentive to upgrade becomes less and less (i.e. incremental improvements are mainly performance and little tweaks) looks for companies like Adobe to really start pushing subscriptions, i.e. you only lease, never own. Someways much more inexpensive for the casual user, but for those who sometimes get 3 or more years out of software between upgrades, you are in the sights.
I will upgrade because I want the performance tweaks for multi-core like what you see with Liquify which I will use a lot working on model shots. I also expect this to be my last upgrade. I could live with CS5, but also think CS6 has a good chance to be the last purchasable version from Adobe