I grabbed the latest EOS Utility, ZoomBrowser, and the firmware. All seem to work as expected, however whichever version of Canon RAW codec I have installed doesn't read the new firmware 2 images. I see there is a RAW Codec released the same day as the latest ZoomBrowser (which works), but I haven't downloaded it yet (on the wrong PC). So, if you use the Windows RAW Codec at all (to get icons for RAWs, or the slow yet handy at times Windows Image Previewer), you'll likely want to grab the latest of that too.

On an unrelated side note, does anyone know if there's a way to get back to the Adobe RAW converter from Elements 10 without closing the converted image and reopening the RAW? DPP has spoiled me into changing things whenever I want, such as re-tweaking white balance. The ACR/PSE combo isn't seeming quite as friendly (though it does seem capable of producing nicer images). I'd love to know that there is a secret button to go back into ACR. I know I'd lose all my edits in Elements, and that's fine. I guessing the solution is 'buy Lightroom', but figured I'd ask.