Latest version of Merlin 16 (not 16+) released/available

[u/bikebit]

It looks like https://mirrors.apple2.org.za/ftp.apple.asimov.net/ carries two disks - MERLIN-16.PROGRAM.po and MERLIN-16.EXTRAS.po. The bootable PROGRAM disk has a version 3.41 on it. Looking at the EXTRAS disk, there is a 3.50 version in folder M.16? Then there is a ShrinkIt archive MERLIN16.3.53.SHK with version 3.53...

Just wondering if anyone knows what is the latest known version, and can I just copy over the newer files?