Watch has a great article and several spy reports
pertaining to Episode III.
"Final costume and wardrobe tests are underway."
to read: "A classic trilogy
looking Stormtrooper has been spotted. Well, at least it looks more
like the troopers from the originals than that of the clones from
"Hayden Christensen has been on
set, working with stunt coordinator Nick Gillard. He is masterful
with the saber already. Ewan McGregor will report soon and the two
will begin blocking THE DUELS."
"The crew is pretty much done with
completing what has to be the largest practical set built for the
prequels so far."
read: "Darth Vader remains the
most tightly-guarded and closely-kept secret of the film so far. The
current crew knows almost nothing about the character's appearance
and role in the film (other than he will be in it). Not even the
prop or costume people know much at this point (or if they do they
aren't talking). So it might be safe to say that Lucas is taking a
"Return of The Jedi" like approach to the character and
how his appearance will be dealt with as far as secrecy."
"Shooting begins in just over 3
weeks. Ian McDiarmid is said to be scheduled for the first day's
There are some great updates here, and their source has supplied
information in the past that has been entirely reliable so far. But
for now I would consider these to be just a rumor.