This news article is a little off.. these features were never proposed to be put into the game. After Skyrim was finished, the company told all the the programmers to spend a week creating any feature they'd like to see in the game. It was a creative jam session.. and whether any of this makes it into the game is up them. But these are not "cut features" in the sense that they were being considered and didn't make it into the game.
I do hope some of those do make it.. the spear combat looked pretty rad.
Edit-Sorry if the video already explains this, I'm at work and don't have time to view this version of it. There's a full keynotes version of this video that goes into the development methods at Bethesda and the whole talk is awesome.