UI and library updates. Games that can't be installed on a computer are no longer listed, and the message when one can't be downloaded now says so plainly.
Check what you got:
MultiverseVRHub.exe, 4427264 bytes
45b14bab3b32b9e72bf9758b6252129cfe3b87d9f071222e818127350f4ae25d
MultiverseVRHub-1.0.18.zip, 3305187 bytes
32ad3d725992b7dc2994c5c90d5cc705df1fac3b02d3b0532fd9c4cbcdc84957
Run this next to the file & compare:
certutil -hashfile MultiverseVRHub.exe SHA256
Doesn't match, don't run it.
It isn't code signed yet, so Windows shows the blue "unrecognized app" box the first time.
MVRH does not host or include any game files, code, assets, or other content owned by Nintendo or any other rights holder. It only applies VR patches to builds and files supplied by the user or obtained from third-party sources. Users must provide their own legally obtained games. MVRH is not affiliated with or endorsed by any game publisher. All trademarks belong to their respective owners.