In its latest newsletter, PocketInformant let us know that WebIS Mail 2.0 is currently in private beta testing. The software is under a re-development effort, which started back in April 2003. Screenshots of 2.0 as well as information on its release and Public Beta are available here. This update provides Windows Mobile 2003 support as well as a major overhaul based on requests from users.
Also according to the newsletter, the next Pocket Informant version 5 is in full development mode and is about 2 months away from release.
Other area being revamped is their web site, including a new support system with an online ticketing system, better FAQ, and a full knowledge base.