Kenny Lim has posted the source to his WinHEC-compliant Avalon NNTP Reader (screenshot here). It's stateless right now, but WinFS seems a natural for keeping this kind of state as soon as we're allowed to extend the WinFS type system. Thanks, Kenny!
“WinFS is in good shape and hasn’t been cut from Longhorn. We’re going to ship it :-). What we need is your feedback on whether we’re building the right thing. It’d be great if you went to MSDN and downloaded the newest bits. They’re much more stable and represent a big evolution of what we’re doing.”
Dave Massy has amassed some information about the new WinHEC Longhorn build (4074) and it's available on the Longhorn Developer Center in the "Conference In A Box." The idea is to bundle the set of conference-related materials together into a kind of "virtual event" so that even folks that didn't get to go to WinHEC can get the Longhorn information that was provided there. The plan is to gather this same kind of material for future Longhorn community technology preview drops.