Microsoft has announced that they are going to support a bunch of CSS properties without vendor prefixes as well.
Following properties are going to be supported without vendor prefixes:
Gradients (CSS Image Values and Replaced Content)
font-feature-settings property (CSS Fonts)
Indexed Database API
Timing control for script-based animations (requestAnimationFrame)
The company said that to maintain compatibility with older code, they would still support Microsoft vendor prefixes in IE10.
We will submit new test cases to the W3C for all the features that IE10 now supports without a prefix. As Working Group members and co-editors, we will work with our colleagues to move these specifications forward to Candidate Recommendation.