According to Steve Gilmor, Apple's iTunes is to support enclosures in RSS feeds (podcasting). I have been looking for more details on this and have not found any yet so I could have mis-read the article but it would be a sensible move for Apple. Podcast's were the reason I bought an iPod and so the reason I had to install the iTunes software (which I don't particularly like BTW) and therefore the reason why I started looking at the iTunes music store. Hopefully the inroduction of a podcast client in iTunes will mean I get a podcatching setup that works reliably....
Update: The BBC have posted a story about the podcast support in iTunes. The BBC have also extended their podcast trial. I think that happened around the 19th May but I've been working late recently so not been posting.
