Apple has issued updated driver packs for Hewlett-Packard and Epson printers and scanners. At this point, there is no specific news on what the new packages add/improve/correct. Details on the entire package of Mac OSX 10.6 Snow Leopard printer and scanner drivers can be found here.

Note: This is one of the cases where it is better to use Software Update to apply the update rather than download and install manually. The full HP and Epson update files are very large, 738 Mb for the Epson / 388 Mb for HP, and will apply patches for the entire line. Using Software Update will only download and apply updates for the printers and scanners you have .. a considerably smaller size and faster download.