Apple has put iTunes 4.9 on the fast track; look for it within the next three weeks. I'm not sure I agree with the whole goal of, "commercializing podcasts," though...

"As a first order of business, sources say that Apple is developing a user-friendly 'Podcasts' area in its iTunes Music Store that will closely resemble the existing 'Audiobooks' store. A centralized grouping of the latest and most high-profile content will be flanked by listings of Podcast categories and top downloads."