Tk 8.5 will make extensive use of native widgets. Tile is being merged 
with Tk in 8.5, which appears to be in beta.

http://wiki.tcl.tk/11075

When Tk 8.5 is release I'll be looking into updating Labltk to use the 
new widgets.

 >On Fri, Oct 12, 2007 at 07:43:32AM +0100, Jon Harrop wrote:
 >> On Friday 12 October 2007 05:50:58 Jeff Shaw wrote:
 >> > I'm wondering if there's much of a market for a proper Labltk book?
 >> I'd love a book on GUI programming with OCaml! Is LabkGTK2 more
 >> popular than LablTK?
 >
 >Probably.  Its widgets are also much nicer looking, and apps written
 >with it don't look jarringly out of place on a modern desktop the way
 >Tk apps do.  (All IMO, of course.)