With the release of JMP and JMP Pro 18.0.1 on My JMP, the installation file can be used as a full installer of 18.0.1 or an updater from 18.0.0.
Launching jmp__1801__win.exe or jmppro__1801__win.exe when JMP / JMP Pro 18.0.0 is already installed presents the following dialog:
Choose Modify to begin the installation of v18.0.1, overwriting v18.0.0.