Hmm... I doubt it'll make a HUGE difference, but I'm wondering whether or not this could mean that UVLS might actually be somewhat viable still for Demo. At least for the start of the tier. I know that it definitely won't be AS good as it currently is, due to the removal of Glyph of Everlasting Affliction, and the change to how long it procs after the pull, but if most of the people saying it won't be viable for demo anymore are basing that off their testing on the PTR, then maybe it might be somewhat better than people have been thinking... Unless everyone's actually just been basing it's viability off theorycrafting and maths, rather than PTR testing.
As a side note, assuming UVLS is still a terrible trinket in 5.4, how viable is Demo looking to be without it? Anywhere near as strong as it currently is? All throughout the later pages in this forum I see some top warlocks saying they're going to be rolling with Affliction for the majority of this tier, with possibly destro for the fights where it manages to find a niche, but haven't really heard much about the viability of Demo. My problem is that I've never been able to play affliction effectively (and I really mean it... NEVER, in my 5 years as a warlock, have I enjoyed playing affliction, nor been able to play it WELL in the situations I was forced to pick it up.) Ideally I'd like to be running Destro MS / Demo OS, or even Demo MS / Destro OS, but if Afflic is going to be at 5.0/5.1 levels (i.e. being the highest DPS spec in the game by a long, long shot), then I'll probably be forced to pick it up again by my guild. And I WON'T be a happy camper. I get that Destro is currently not viable for single target in Heroic SoO, but whats Demo looking like?