I can't recall what they wear during the scrimmage (I think it's practice gear), but they may wear the real thing for the first time during the mock game (since that's the kind of thing the mock game is for - walking through the cosmetic and logistical stuff like the player introductions, anthem, etc.)

I doubt the changes are large enough where the team finds it important enough to actually post new pictures online.  So, you're probably going to have to wait until August.

The Mad Dog (8/27/2007) Gray is better than Garrard -and- Leftwich. The Mad Dog (7/30/2008) Mike Walker = draft bust The only defense against madness is the accord of your peers.  That is, if you can convince no one that your beliefs are well-founded, then it's probably you who are crazy, and not the herd. - Alexandre Kojeve

There are also very small changes to the number outlining on the jersey and to the pant stripe.

The Mad Dog (8/27/2007) Gray is better than Garrard -and- Leftwich. The Mad Dog (7/30/2008) Mike Walker = draft bust The only defense against madness is the accord of your peers.  That is, if you can convince no one that your beliefs are well-founded, then it's probably you who are crazy, and not the herd. - Alexandre Kojeve

It's about time.

Go heavy early. You do not maintain perfection, you work for it everyday.

The removal of the black jersey is GREAT!! That was the most ridiculous, lame uniform ever. Talk about being like 8 other NFL teams. We need to be ourselves.