Dire Avengers thing is odd, but not unprecdented. Orcs in Fantasy had their box sized halved....
But the rest of it, especially those whining about rules you have not actually read please...please for the love of whichever deity you do or don't believe in....shush. At least for now. Just wait until you've got the new codex in your sweaty, clammy hands. And have had a chance to read it. And ideally, actually get a few games under your belt. After that, you'll have what we in the grown up world like to call an 'informed opinion'. Once you've got that, if needs be whine away to your heart's content.