Mario Kart World got a surprise update today adding a new Bob-omb Blast Battle Mode as well as some balance changes for the Bullet Bill power-up that make it smarter, faster, and longer-lasting.
Nintendo spells out Mario Kart World's Bullet Bill buff in the patch notes for version 1.6.0. The patch "increased" Bullet Bill's "range of lateral movement" and made it "easier to easier to follow a shortcut route immediately after using Bullet Bill." That note right there is key, as I know from personal experience that activating a Bullet Bill power-up while using a shortcut would often result in catastrophe, and it sounds like that's now fixed.
