There isn’t much to say. As far as I could see, only three things have been changed:
Element.style.maxHeightis now supported.
Element.style.maxWidthis now supported.
Element.style.minWidthis now supported.
It’s surely a disappointment for those who were hoping for more of a move toward the DOM standards. There were also some changes regarding XMLHttpRequest, but that’s proprietary and thus beyond the scope of my tables.
And sadly, this is not an April Fool’s joke. Sorry.