Just as a follow-up, I asked one of the presenters and he said they deal with Tahoe features that are still covered by NDA. It sounds like we won't know what they cover until we get to DevCon.
>As for the Tahoe sessions, I'm hoping they'll post more info before the conference. I'm sure the schedule we get when we get to the conference will have more details. I assume the descriptions are vague either because the content wasn't determined when they printed the brochure or because they apply to features that haven't yet been publicly disclosed.