Currently, on the PBE, there a TON of changes that benefit Warwick or neutral change.
Warwick is not quite as good at killing squishies (or is he?), but much better at tank busting. His ultimate now deals bonus physical damage equal to 15% of the enemy's max health. This stacks with Bork, so Warwick can deal serious % health damage to his target.
A hybrid on-hit item. This just screams Warwick. Not sure if it will be built, but it's only a potential benefit in my eyes and cannot hurt the wolf.
**Red Buff Changes**
Pretty big one here. Red buff's first tick now applies on-hit/scales with attack speed, meaning that it will also apply on every Warwick ultimate tick. Practically adds back the Booty Hunter Warwick from Preseason 5 with Challenging Smite (maybe not as bad, but it's like it's close relative).
Small, but Warwick is somewhat of a Drain Tank, so the increase in healing from Spirit Visage from 20% to 25% is a benefit as well.
**Experience Jungle Buff**
This means Warwick is reaching Level 6 quicker, meaning earlier ganks. This is a buff to most junglers, but especially junglers gated by ultimates.