For 6.5 we've implemented support for roundedScale (buttons), containerStyle (text fields), and various visual changes for certain controls. This is only a partial implementation of Material 3 due to time and compatibility constraints. The biggest issue I see is that we don't support design tokens. We need to look into how we can support them, likely with a new Material3 style, as we've done for FluentWinUI3. This would mean that we stick to this version of the design for this style, rather than trying to support two different versions in one style, like we are now.