This release features a completely restructured core, although there are seemingly only few changes on the user interface.
Starting with 3.0, all image handling is done in memory and requires an explicit save operation to commit the changes. All the operations on the image can be undone or redone before saving.
SCSI images with 512 bytes/sector and IDE images are now fully supported; IDE images may be partitioned.
File contents (text, BASIC program, or source code) may be edited and saved again.