Interesting.
I don't think that was the original plan by any means (SS86 being a way of releasing toys that were meant for another line that got seriously re-jigged), but I'm sure it must have occurred to Hasbro by now.
But we appear to be coming to the end of G1 stuff for now (yes, there will be endless toys of the dozen or so big-name G1 characters), and the remaining toys don't seem to be enough to justify, for example, SS84. Although if that meant actually decent cassetticons for a change...
We'll just have to wait and see. Although hasn't Hasbro pretty much run out of 2007+ movie characters? I don't know, it isn't my thing, I just read this a few times when SS86 first cropped up; perhaps there just won't be enough toys to get the numbering that far. Shouldn't take long to know - TFWiki lists up to SS76 right now.