Aerial Up B wasn't buffed in Knockback. It just has a bigger hitbox. It's in the data mine that Dantarion extracted.
Also, the new fireball feels the same to me. It has 3 more frames of end lag, but we just have to adjust to the new end lag. It still has the same usage from pre patch IMO. So dont worry guys, yes its a bit more laggy, but we really just have to adjust to its new end lag. Fireball is still amazing. There's no reason to change the way you use it IMO unless you fireballed the entire match before.
and Jab to Up B connects easier now, thanks to those who posted about it above. It's a great find! Unfotunately, players can still shield the up b