I just checked and the arrow keys cant be used when browsing patches (on Windows).
To expand on earlier answers, Miroslav is working fine and its nice to be able to use it in the new interface. It will get a lot more use now. Getting more use out of Miroslav was my prime reason for upgrading.
You have to download and install the whole kit and caboodle, given the choice I would have skipped the loops and construction kits which I am unlikley to use.
I have been auditioning the new sounds. They are decent bread and butter sounds but nothing has jumped out at me. The drawbar organs are nice, but they are just fixed regestrations.
I don't think I will use the pianos, guitars and basses much, it's not that they are bad, I just have better alternatives. Some of the others may come in useful.
A lot of instruments seem to rely on effects which is fine as long as they end up sitting well in a mix. Time will tell