Are we still waiting for the SVG standards before we can implement gradient meshes ?

I have a ( pretty simple and obvious ) method of rendering gradient meshes that is simpler than blurring multiple beziergons and is quite fast ( 100 ms in Java rendering 500x500px approx ), I was wondering if we start putting a basic gradient mesh in inkscape and we can conform/export to the SVG format when it comes out.

I believe we are trying to get a triangle gradient primitive approved from SVG. Do we have any plans of getting a quadrilateral primitive ? It will be more accurate for gradient mesh. This paper I found explains some quadrilateral rendering techniques :