Yes, lead Metagross is easily one of the most common leads you will find. Extremely consistent at getting the rocks down, forces Suicide leads to do only 1 thing with MM/BP, and can go boom. Good stuff. The rise in this Metagross usage seems to have led to less Azelfs and Aerodactyl, who can only set up rocks and do nothing else, while Heatran and Nape leads have gone up. Tyranitar seems to have lost some of his touch too (probably those Metagross leads).
I think panamaxis had a lot to do with Metagross, showing off Metagross on his offensive team. I saw it on his RMT, and tried it on my that same day, and have used it since.
MixMence usage has gone way up too, and lots more Salamence are running max speed (because other Salamence are).
From what I have seen, Scarf Flygon has gotten even more popular, and so has LO Cune.
Idk why but I still see Electivire a lot...people don't seem to get the damn thing just kinda sucks.
For Ubers: I'm not sure how accurate I am, since I keep playing the same people "mostly"
MixQuaza is waaaay up. I see far more MixQuaza than any other kind.
Otherwise, except for some more Scizor leads, less Deoxys leads, and a few other minor things, nothing much has changed.