semordnilap
Well-known
It's going to be released in 60 days (if the Keynote is on target) so that would suggest equal support for both iPod touch and iPhone re: Flash - that said, Flash is not supported in the browser by Safari - either on the desktop (to the best of my knowledge - mind you, I use Firefox on my Mac Pro and Macbook) or on the iPod Touch currently. Yes, there is some form of some sort of Flash (or is it?) via the YouTube app that comes with the Touch/Phone but definitely not browser enabled.
Flash is a plugin. There is one for Safari on the Mac, of course. Youtube on the iphone/tough does not use flash–the youtube videos are encoded as h.264 (a video codec). Youtube announced an agreement with apple as of the original iphone release to encode many videos in h.264 so they could play on the iphone. There's more story if you want it–html5 supports h.264 for embedded video, which will likely supplant flash once firefox supports h.264, which it doesn't now.