[sergiol] has great passion for this possibility, as of 2006.

Quite a few people have made cogent observations about [Tcl]'s [channel] and message semantics, how
to properly generalize them to make a place for [UDP], and so on.

While [CL] would appreciate the aesthetic advance represented by UDP in the core, and certainly
would make enthusiastic use of it, he's already a satisfied customer of the existing alternatives
for [UDP for Tcl], and, despite rumors to the contrary, unlikely to be in a position to help 
significantly.