It is available in the Flysimware store now. It will be a few days or more until v1.6 is at the other stores. The update list looks good and I am primarily interested in the updated FDE, engine sounds, and especially the updated options for using the RXP WX500 with either the standard GNS(GPS530) or with the more advanced GTN750 unit. The former option is good for me as I do not have the GTN750 unit yet but I do have the RXP WX500. The only reason I have not bought the GTN750 is that for me it is price prohibitive in the sense that I have other items on my must buy list which take priority over such a utility purchase. At some point I will be buying the GTN750 but in the meantime, this option is a win-win scenario.