I have not read or heard anything. I believe this was a new route and only ran 1/9/15 to 8/10/15. Maybe it was a trial and if successful they wil continue it next year and if not, they may drop it?
Best to call VS themeselves and ask. If anyone knows it would be them (maybe )
I spoke to VS and, in case anyone else wants to know, they are operating GLA to LAS in 2016 but only on four days in September -Thursday 8th until Thursday 29th. And the 8th is fully booked already! Doesn't bode well for reward availability!!