Warlock 2024 Phbd. Pact of the blade not working as intended (only adds to 'to hit', not damage) eldritch invocations not showing up as an option (eldritch smite) or showing up without prerequisites. Being able to be a melee warlock (pact of the blade), have enhanced magic (pact of the tome) and a skeleton familiar (pact of the chain) all at the same time is super cool.
You get 4 options in the 2024 phb (the previous phb has 3 so a slight upgrade) and all 3 of the options from the 2014 book are available in updated form here (archfey, fiend and great old one). Gruumsh is now some sort of orcish analog for odin or something, and orcs have a penchant for nomadic wanderlust.