To me the most noticeable change was incidental puck contact. The puck was bouncing around everywhere all the time. I'm not saying it''s a bad thing, just a major difference.
I was spamming stick-lifts everywhere and actually managed to get one hooking penalty. Sure, it has its downsides, but positives also. One doesn't need to just stand on a passing lane and hope EA's Random Number Generator rolls for a pass interception, but instead it's possible to play more active defense and lift the stick of the player about to receive the pass. I like that.
Checking felt harder to me as well. Whether it has more to do with checking or skating mechanics, I don't know. Loose puck dekes are difficult to pull off with a player that has relatively low deking attributes.
This is from the beta-to-release (Day 0) patch notes:
Poke Checking
Fixed cases where poke checks were tripping a player after getting puck first
Fixes to accuracy of poke checks on stationary/slow moving loose pucks
Fixed a case where players were not being tripped after consecutive pokes
Various additional poke check targeting fixes
There were changes to the pokes in the tuners too, though:
September 1, 2018 โ Tuner 1.00 Updates from Beta to Final
Tuning for tripping based around positioning, player speed and collision
September 19th @ 2am PST - Tuner 1.01
Poke checks now need to get a slightly larger piece of the player to cause them to trip
Increase to pokecheck accuracy when poking to ideal angles