Yes you should stop using the Tech Preview and start using 13.5. Hard Stop. In my humble opinion, VMware should hard-code an expiration date into any public betas so that they stop working at some point in time.
You continue to run the Tech Preview at your own risk. It's a public beta and the beta period is over. The reason it's a risk is that Tech Previews receive no support or updates from VMware (even security updates. If you should have a problem, the first thing that anyone will say is "can you reproduce this on the official 13.5 release?" Security issues that affect the Tech Preview will absolutely not be patched. And if Apple should change something that breaks Fusion (it's happened - for example with VoiceOver on Sonoma) it will not be fixed in beta releases.
There are also features in the 13.5 release that weren't in the Tech Preview. The built-in tool for download of Windows 11 ARM is the big one.
The Tech Previews do not offer to upgrade to official releases as they aren't part of any official release stream. They have no release number other than the build. Could VMware do that? Perhaps they could - but they've chosen not to. do that. In the grand scheme of things is it really that hard to download the official release and run the installer? Your VMs that worked on the Tech Preview will continue to work.
My recommendation when moving from the Tech Preview to Fusion 13.5 is to drag the Tech Preview application from the Applications folder to the Trash, empty the Trash, and install Fusion 13.5 from the installer downloaded from VMware. That avoids any confusion about what version of Fusion you're running.
- Paul (Technogeezer)
Editor of the Unofficial Fusion Companion Guides
