Unless anybody has proof, they're probably just salty from a dry run. ilvl63 shouldn't be dropping left and right. If anything it should be even more rare and/or limited to boss kills. This game really needs ilvl64 and ilvl65 and Blizzard has to be smart with how they're distributed. Diablo should be the only thing in the game capable of dropping ilvl65, for example.
You're basing it on opinion or fact?

It does make a lot of sense if they decided to lower Act 3/4 drop rates for 1.03 once Act 1-2 had better drop chances. I'm pretty sure they never had the intention to increase progression speed for players. They expected people to take a much longer time to clear Inferno after all.