V=817 is no longer working for me in Chrome. There are a few website admins complaining that both MS and Google just raised the prices on the use of the imagery APIs . LiveATC.net is one and their feed map is no longer available as a consequence, according to their official forum.
EDIT: Tried a reinstall of FSET and now it's working for me again. But that still doesn't solve how anyone can find the next version number.