30D:
http://web.canon.jp/imaging/eos30d/eos3 ... are-e.html
5D:
http://web.canon.jp/imaging/eos5d/eos5d_firmware-e.html
The 5D adds formal support for 8GB or larger CF cards; otherwise the updates are to allow(okay I doubt you can stop it, their words, not mine) for lens info/names to be recorded in EXIF, and updates lens list for the lens correction tools in DPP 3.2
http://web.canon.jp/imaging/eos30d/eos3 ... are-e.html
5D:
http://web.canon.jp/imaging/eos5d/eos5d_firmware-e.html
The 5D adds formal support for 8GB or larger CF cards; otherwise the updates are to allow(okay I doubt you can stop it, their words, not mine) for lens info/names to be recorded in EXIF, and updates lens list for the lens correction tools in DPP 3.2