Ok, this will be hard to explain, but here is a thing:
I have to use integrated graphics for like 2 or 3 days. Since I can't use it to play most of the games I want I thought:"Hmm.. I'll play Minecraft". I opened the world on 14w33c, where I was playing on my regular graphic card, but it crashed the second after I entered the world. So I tested it on the regular version of Minecraft 1.7.10(I think) and there was just fine. So... this isn't a big problem for me, but I thought I have to report it - and here you have it.
Greetings from Poland
edit. my integrated grapics is intel HD 4600