Here's a (revised) list.
Biggest things so far: Golett is actually going to be okay! It got quite a few boosts, so now its barren movepool will be expanded. Stealth Rock is cool too.
ELECTROWEB MAGNEMITE AAAAAAAAAAAAAA
oh god heat wave woobat with simple
elemental punches on timburr are cool
tailwind cotonee hmmm
yay superpower axew, say goodbye to pure dragon-type sets (it also got aqua tail)
LOL ROOST ARCHEN