Hi
MG 2 user here just trying the Beta of MG 3 on an M1 Mac Book Pro, OS 15.2 using Nuendo V 13.0.4
A (very ) small issue after installing the beta was that the VST 3 plug in version while recognized by Nuendo 13, did not automatically add itself to a Plug In folder in Nuendo so it is visible to the user.
I added it manually using the Nuendo Plug In Manager, but it might cause initial confusion. Most Cubendo use dont ever look at the Plug In Manger and might instantly seek ( uneccassary ) support. 