Quick Note: On one project that I'm on, we're in the process of moving from ColdFusion 9 to 10. During some regression testing, one of the testers began receiving errors on file uploads. When looking at the code, I saw this:

view plain print about
1fileUploadResult = fileUpload(arguments.tierCSSDirectory, "header_background_image", "image/*", "overwrite");

Now, I remembered that there were changes to MIME type checking in CF 10, but I wasn't entirely sure. This code, written by one of our developer's several months ago, would allow any "image" MIME type. What we discovered is that we couldn't do this kind of wildcard mapping under CF 10, that we now had to list out each accepted MIME type as a comma delimited list.

Just thought I'd share.