I'm glad someone resurrected this thread, or I'd have missed it. Wellauer Latakia is wonderful stuff. I don't open tins too often, as I have a limited number of the older ones. But I recently got some tins from 2018, and it still seems to be the same blend. Have no idea how much Syrian latakia they have, if in fact that is what they still use, but however they manage it, the blend is still consistent with tins I have going back many years.
You all may already know this, but Wellauer Latakia Mixture is also a terrific blend, maybe one of the very finest English blends available (in my opinion, of course). If it were only easier to get in the states....