On Wed, 14 Jul 2010, Khaled Hosny wrote:

> I get double struck instead of regular ones.
>
> \setupbodyfont[xits]
> \starttext
> $\mathit{Γ\quadΠ}$
> \stoptext

This was fixed a while back. Not sure if Hans released a beta after that. 
IIRC, in math-map.lua table.merge needs to be changed to table.merged (or 
vice versa?)

Aditya