Its load 23 and there is a new FMS pilots guide available now. It's part of the required documents in the airplane library so when you get 23 you will get the new FMS Guide. The new FMS software version is NZ7.1, the previous version is NZ7.03 (nav ident page
). It includes 21 and 23 which is nice and I'm just reviewing it now. I can't distribute it though so please don't ask.