Mathml better rendering, because the current one have some problems on it, the possibility to style mathml elements and new features like <mspace linebreak="newline"/> to break the equation line.

The possibility to write and table or an element at vertical position, it is used on big tables and asians texts.

If this already at roadmap when it will be implemented which version ?

Thank you.

You can use CSS transforms to rotate text 90 degrees, but Prince does not support vertical text yet. MathML improvements are on the roadmap, but we have many JavaScript improvements that we need to make first.