Your Friday reminder that GIMP 3.0.0 is set to be released next Sunday, March the 9th -
That is 7 years after the last major release - GIMP 2.10.0 (although the 2.10 series saw incremental features being added)
For 3.0,my favorite change is __non__ destructive editing:
Most filters can be be applied as layer attributes and be re-applied "live".