They completely redesigned their B3 and many new presets for all of their instruments.
BUT be careful when you install Analog Lab 4 the old Version Analog Lab 3 is removed. So you have to download it from their Archive and reinstall Analog Lab 3 again.
The B3.
The lack of a global tune feature on all the products(like what you find on Kontakt) has always been a nemesis for those of us who play in something other than A=440hz.
I downloaded two of the new synths and now gig performer cannot see any of the Arturia plugins. I restarted my machine and have done a couple of full rescans but no luck.
But the Arturia plugins thst are already embedded in rack spaces still load fine.
Are they installed in the same folder as before? Maybe the new installer moved them elsewhere ad you need to add that folder to the list.
also try to rescan all failed plugins.
FYI, I installed the Arturia instruments (v7 collection), and they all passed GP scan (Windows 7). Quite a nice collection with good presets. It will take me a while to get a good feel for the various instruments.