One drop on my first game since the update.
25 to 30 games since, nothing.
I know random is random, but that seems like a pretty low drop rate!
Same experience here. I got an "Exceptional" skin for the Medic Pistol within a like 30 minutes of playing a game after the update ... about 10+ hours / numerous games (mostly wins) and I haven't seen anything else.
I chalked it up to being broken and went back to playing other games until it's fixed or tweaked a bit.