Dream Logic Audio
The new VSTs are updates to ones that already exist, so they should already be in your custom layout from before.
It said there were 5 new ones. That usually means 5 extra.
Not that I necessarily have all the existing ones in the custom layout. I've been migrating my custom layouts from 7 to 8 to 8.5 to X3 and now to Platinum, and it's always been a problem that I have to manually find any new VSTs and add them.
The only manual thing you need to do is Import the new Impulse Responses into REmatrix Solo.
Given that I have no idea what REMatrix Solo is, that is awkward. Is it a ProChannel thing? I don't touch the ProChannel so it doesn't bother me too much, but I don't like the fact that we have this new automatic installer which only really half-installs things.