Yesterday Sony announced that their latest releases of Batman Beyond, Transformers, Ender’s Game and B.C. and a few others will be it for there digital comic service on the PSP.  The good news is now you have a finite point to grab everything released.  Sony said this isn’t the end of digital comics for them though:

The Digital Comics Team will continue to work on bringing the comic service to other Sony devices.

To date there’s been over 4,000 comics released on the platform.  You can read the small snippet at the Playstation blog.