DX9c (4.09.0000.0904) is the latest or rather last version prior to the
release of Vista and DX10 (6.00.6000.16386) and DX10 SP1?
(6.00.6001.18000) that is part of Vista SP1. I'm not sure whether DX10 is
available for download.

What I think has happened is that MS have repackaged the installer perhaps
to fix problems some users might have encountered.
--
Mike Maltby



Noel Paton wrote:

Now I'm confused! - not only does the Dec2006 update install OK - the
Feb 2007 on (8MB smaller) installs over the top of that!
Hmmm - checking dxdiag (which I should have done before!), the latest
files there are still only from July 2004, so it looks as if later
versions pretty much do a dummy install of the files
Ah well - at least I have the latest ones in there now