I have yet to see nVidia release a "hotfix". Their drivers just work.
Except when they don't. I have a GTX485m, the top of line mobile card. I got my computer in Feburary, the GTX485m was released in January and there has been no official driver support until mid april in the 270.xx verde drivers. The last drivers that worked were 265.77 from the notebook manufacturer.
It took 3 months for Nvidia to add 3 lines in the ini file for a mobile GF104 part.
I do miss ATI drivers. Firstly, the monthly updates were predictable so I knew when new drivers were coming out and had the option of always running the newest incremental updates or not (and upgrade every few months like Nvidia does), second graphics cards were actually supported either on release or hotfixed in support shortly after release.