First a disclaimer, I don't work for those folks. My understanding of things is that upgrade time right now is not very good. Our company lost some guys to them almost two years ago, those poor folks havn't upgraded to the left seat yet. (Last I heard)
Their equipment is nice. Of all the different Learjets I fly, the 31 is hands down my favorite.
If no one from flexjet responds to your post here, drop me a line and I'll call a friend of mine over there and get the latest. By the way, are you the Brett I used to work with at ADS?