Now, if all of you will just reach under your seat, you'll find a brand new feature called "Defaults".
This feature, toward the bottom of the navigation on the left-hand-side, allows you to set default entries at the Podcast level that will carry down to each new Episode you create. Fields include a Summary, Description, Tags, and iTunes details, which are then pre-filled when you create a new Episode.
This is a totally optional feature of course, just ignore it if you don't want default content for your new episodes.
Have fun!
-Dan