Translating: "we never gave a fuck about web standards because we were a monopoly, now we realized we're losing the war and decided to improve things. Hope it's not too late..."
What annoys me is that most of the tiles are just variations of some "Comebacks come in many shapes and sizes" meme they invented. It always amaze me how Microsoft's marketing manages to be completely disconnected form reality time after time.
I don't know any power-users who will switch to IE after seeing this website. If anything, they'll see this as an insult to their intelligence and stay even further away from IE than they did before.
Every time Microsoft tries to be hip and cool, I hear a collective facepalm.