From now on, a failed offside challenge will result in a two-minute penalty against the club asking for the review. It’s a potentially powerful infraction. Can you imagine a team in a tight game giving up a goal it thought was offside, losing the challenge, then having to withstand an immediate power-play opportunity? It’s going to make bench bosses much more wary  and ratchet up the pressure on video coaches.
Incorrect goaltender interference reviews stay the same  the loss of your timeout. That’s probably a wise decision, since there’s much more grey area than with an offside call.
Another adjustment that will have strategic impact. Teams are no longer able to call timeout after icing the puck. The other club can still do so if it wishes, but tired defenders won’t be able to ask for the extra rest.