I am currently using OS 10.5 (Leopard) with Photoshop CS4. Things are running smoothly and printing is smooth to my Epson 7900. I make use of Epson's Advanced Black and White print panel for most of my printing, since I shoot mainly B&W.
Will the Epson Advanced Black and White print panel still be available to me once I upgrade to Snow Leopard (OS 10.6) and Photoshop CS5? I have two shows coming up and I have to print a lot of images. I can't afford to deal with problems.