Photoshop 4.0 (not the CS4) introduced excellent typography options, also the the introduction of CMYK color profiles who were easy applicable so the color correction became easy it should be etc.....
Yep. Before "CS" era of adobe, they called their products simply Photoshop 5, Photoshop 6, Photoshop 7...By simply rebranding the products, they have been selling the same thing in last 20 years
Nothing new that cannot be done in PS7 or PS6 or even in PS5.If you know what you are doing.
5 years old D40 and it still works like it came out of the box.