Ah, I see your question, 5115 was always South Fire response and South Fire Ops.
You are talking about the UHF frequency which as far as I know, still works the same way, it is just no longer streamed, that 460 MHz frequency you quoted does dispatch the whole County fire and EMS along with all the multiple tones and fire South response, Ops, fire ground simplex. Not, East, Central or north response channels but does cover EMS North and South response. That is no longer streamed and has been replaced with the phase 2, 2 talk group South Fire on streaming.
As far as the frequency itself, it's just the same, I don't listen to it because I can't listen to all those tones and don't really follow Central and North bands and I don't listen to EMS at all unless I want to confirm a class 5.
The 460 MHz frequency, I think, is still on top of the Oxford Valley Mall? You should be able to hear that, way too busy for me.