You are currently working on UAT 

Not Considering

We have no plans to pursue MathML 3.0 as our community of users has successfully implemented other alternatives in combination with XPP.

MathML 3.0 support

As the MathML 3.0 2nd Edition has been released since 2014, and users start using the latest Math editors to create and format the math expressions, the support of the latest MathML 3.0 is desired.

Simon Tung