Call them changes all you want, there's no real way to deny these aren't massive buffs to Master Yi. Removal of his cast times, increased attack speed, and allowing his Q to strike the same target for potentially double damage from the current iteration is a bit nuts, don't you think? Yi's not even been in a bad spot, so I don't understand why he'd receive such large buffs. Sure, he lost a bit of AD, but I really don't think that's going to hamper him with this at all...
Alpha Strike (Q):
Cast time removed
New effect: If Master Yi has struck less than the maximum amount of times and there are no other nearby eligible targets, he strikes the same target for 25% damage before checking again.
Duration changed to 0.8 seconds from ‘variable’
Cast time removed.
Wuju Style (E):
No longer grants AD while not on cooldown.
Attack speed changed to 40/50/60% from 30/55/80%.