We just released an updater for ColdFusion MX 7 last week and this week brings our first hotfix for it. :-)
If you use cffile action="upload" in any of your applications, you will want this hotfix which fixes a change in behavior that snuck out in the updater. Starting with ColdFusion MX, the documentation omitted the fact that you could specify a filename in the DESTINATION attribute when uploading a file. We fixed the code to match the docs, which was bad. This hotfix fixes that fix.