Seeing as there hasn't been a new post since April, and how Guthix's servers are down I believe its safe to bet that this RSPS is not going to come out.
I'm just posting this so if anyone finds this down the road they won't have to have there hopes up for too long.
I still think this rsps would've been great but, I don't blame Guthix for not finishing it I mean who wants to put 5 grand down for advertisements not putting into account the countless hours it would take to find and fix bugs to a point in which people would feel safe enough to bet money on it.
I really don't know why I'm posting this I mean a person could probably find out that it was a dead project once they saw the date of the most recent updates. But, anyways hope u have a good day and sorry to be the bearer of bad news.
EDIT: Guthix Servers will be back up in September