Thanks for the heads up - hadn't heard that. I'll check it out when I get home. But, judging from the brief review at Engadget, it's not entirely clear whether you can manage (and automatically update) subscriptions from within the app, so that they sync properly, which is my main complaint with the iPod right now. There's no subscription management at all right now(pre-app), and when you manually download new episodes from your device it screws things up royally. From the comments to that review, it seems like the app's functionality is rather patchy.
Maybe I am misunderstanding you here but I am thinking you do have subscription management via iTunes at the moment?
I have some set to check for downloads at differing intervals, sync to devices via wi-fi when plugged in and delete when played. I only ever have to visit the Podcasts bit within iTunes if I want to change what I sync or add new ones.
The new app doesn't really do anything different from the Podcast option within Music app on iOS. It's bit prettier I guess, that's about it. Slightly confusing is that your podcasts can still be accessed from the old place too, meaning I accidentally started one playing in 2 locations when fiddling around.