DataViz today announced Documents To Go 4.0, a new version of the software for creating, viewing, and editing Word and Excel files on Palm OS-based handhelds. The new version also adds expanded support for spreadsheets, as well as expansion support and improved synchronization. Documents To Go 4.0 will be available later this month for US$69.95. [Update (13:58) – MacMinute reader Michael Jeffress points out that SlideShow To Go, the portion of Documents To Go 4.0 that supports PowerPoint files, is not compatible with the Mac, as was implied in our news item earlier. A full list of differences between the Mac and PC versions of Documents To Go can be found here.]