I think they've changed the method of which they were producing the glass, as to reduce the rough edges.
I got 3 of the original styled glass and while they aren't perfect, you never see those edges and none of them are rough enough to cause havoc (IE cut the o-ring). I have 4 of the newer ones coming in too.
Stock should be slowly trickling back in now that the Chinese New Year is over.
Just for reference, you probably won't be finding the AGA-T v1 any where (screw on top cap).
AGA-T+ has a plastic tank
AGA-T2 has a glass tank
Some vendors will offer glass with the Plus, which can add to the strangeness. I've accidentally dropped the glass in the sink and no ill effects, so I personally see no reason to even offer a plastic tank.