Lexar has their new 80x cards coming out - you can probably find them at some places already. The new cards come with a new version of Image Rescue too.

Personally, I don't need the extra speed (my camera isn't even WA enabled) so I've been watching the price of the 512mb 40x cards at B&H. They were about $180 when last summer when I got the camera and have been falling ever since the 80x were announced. A couple of weeks ago they were $100 but are back to $120 now, still a good deal too.