[XeTeX] The status of XeTeX

[Philip Taylor]

May I ask whether XeTeX is still being "actively" ( or even passively) developed ?  I ask because, once again, I came up against a fundamental limitation of XeTeX yesterday — the fact that a font can be defined to be of a specific colour, but the colour model is restricted to RGB.  Given that (IMHO), the vast majority of XeTeX output is intended for print rather than for on-screen display, would it be possible to add support for additional colour models (and specifically for CMYK) in a future instantiation of the \font primitive ?
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Philip Taylor