|
They were numbered PS 1 through 7.
Then instead of 8 they started calling is CS as part of the Creative Suite branding.
There was CS versions 1 through 6.
Then they changed to a subscription model and called it CC, as in Creative Cloud.
There has been one update since moving to CC and it's called, imaginatively, Photoshop CC 2014.
EDIT: I missed the last part of your question
I don't think there's an upgrade path from PS7.
If you want the current version you'll have to pay a monthly fee. I think they still have the deal I'm on where I pay $10 per month for PS plus Lightroom.
|