The second set of pics do seem like an ST. But I do see the differences you are seeing.
The eye stripe seems more "closed" (if that makes sense) on the second set of pics as well. Look at the angle of the eye stripe curve ">", the top one seems to be more open.
Im also seeing a difference in the middle bar, at the top. The first pic shows the front end of the middle bar on the very top shoot forward a bit before bending back strait up. The second picture does not have this curve, it seems to go strait up in one fluid line.
Could be my eyes playing tricks on me, its been a rough day at work. Guess we'll have to wait for the updated pics.