I am still on the ancient Beta2 with WSE 3.0 June CTP, but there are new bits out. The July CTP of VS2005 came out on MSDN (for suscribers only at this point) and soon after a new release of WSE3.0 came out to go with that (i.e. this requires the July CTP of VS2005). Note that there was a small problem with the WSE3 CTP that Matt Powell explains how to work around.

I got a good chuckle reading Mike Gunderloy's pointer to the latest CTP: "Just in case your edge isn't bleeding enough yet."