Well, as far as I can surmise the information posted on SteamDB is pulled directly from the Steam servers. The problem is that most of these strings are encrypted so we have very little idea what parts of Skyrim they're touching. However, it's basically certain that there will, indeed, be another Skyrim patch. Why? Well, they're making changes to Skyrim and there is actually a beta tab for Skyrim again (try right-clicking Skyrim in your Steam window, properties, beta). The only thing is that it's a private beta that requires a password to access.
It was only a few days ago that Bethesda erroneously gave people free copies of Dawnguard. That's presumably something they'd have to be touching Skyrim (on the Steam database side) to do - I doubt Steam is quite sentient enough to start rebelling against its masters and sending people free gifts.
Given the changes we've seen evidence of in SteamDB they're going to be adding some new translation support. I'm holding out hope that they will use this patch as an opportunity to fix these lip sync bugs. And, to be honest, the amount of time we've been waiting between 1.9's release and the present day isn't too much longer than how long we've had to wait between Skyrim patches previously.
Between what I mentioned above and some of the scattered support rep responses that indicated the devs are 'aware of'/'working on' the issue, mark me down as still holding out some hope. Skyrim's lip syncing isn't down for the count yet. 
And, if it really does get bad, I imagine wizard modders will eventually find some solution or at least decent workaround. We're talking about the same (or, at least, similar) modding community that released such awesome feats of engineering as Morrowind Code Patch and the like.