The following is the short change log from their website:
2009/06/18 - BBFileScout update to 0.7
Option to specify the maximal size of files that can be opened with the internal BBFileScout text viewer/editor (make your choice depending on the performance of your BlackBerry® device) - In the past the editor had a limit of 250 KiB.
Options: it's now possible the remove a previously specified thumbnail-store directory (in order to disable the complete thumbnail persistence)
Options: it's now possible the remove a previously specified startup directory