Amidst all the usual whining about, "iv seen teh tralers ma nids is borked!11!1![/nerdrage]", I think it's worth drawing attention to the availability of FAQs.
My rulebook arrived, I went to the GW website to see if there were any FAQs for any of my codexes.... and there they were waiting: every single one of them. Now that's a well-managed project and a timely release.
GW haven't necessarily got this quite right every time in the past, but this time: just right
Definitely deserves holding up in the s***storm of the usual change-fearing rage.