Here are my notes from the 3rd day of PDC. I have to admit that after 3 days and nights of going non-stop I had a hard time tracking in some of the sessions so these notes are a little more sparse and flaky than usual.

Keynote - Bob Muglia
There will be releases about every 6 months.
WS-Management submitted to DMTF for standardization.
SDM and MOM Management packs let you see the error, call stack, and source coce where the error occured.
Windows Server compute cluster Beta 1 at microsoft.com/hpc. This appears to not do anything in parallel but rather just gives you some place to run stuff when you don't care what machine it runs on just that it gets done.
MONAD - Object based command line language. Integrates command line, COM and .NET. Microsoft will build commmandlets for their servers. We should do the same.
Security Token Servic ewill provide back end for InfoCards and will shp post Longhorn server.
CTP of IIS7 and update of Longhorn server available.
TxF is an update to NTFS with full transactional support. Single digit overhead for using it.
More info in the event log in Longhorn allows metadata wo be logged as well.
Longhorn is modular. IIS 7 is modular as well. Turn on and off features in the web.config file. Metabase is dead.
New API for IIS 7 is a superset of ISAPI.
ASP.NET extensibility API leveraged so you can do things like forms auth for all pages not just ASP.NET.
Longhorn server to include some virtualization.
I had to leave early to go man a booth so I missed the end of this talk.

Visual Studio Tools for Office
Office 12 Foundation Investments:
1. Managed Add-Ins
2. Custom Task Panes
3. Ribbon Extensibility
4. Office Open XML Formats
Add-In Loader and IDTExtensibility2 proxy starts add in loading
Add-ins will implement IStartup interface and inherit from a base class specific to the office product to give you strong type support.
Appliction level custom task panes. Not just at the document level.

COM325 Workflow + Messaging + Services - Developing Distributed Applications with Workflows
This one was by Don Box. I was listening and laughing a lot but got caught up and didn't take a lot of notes. If you have a chance to see this one on the DVD or via the web I would highly suggest it. It really clarified the relationship between WCF, WWF, and where Microsoft sees the platform evolving.
Contracts and protocol based integraton that is message based and opaque to implementaton runtime, IT Pro, etc. is the desired end game.
WWF - Activities (opaque code) stitched together into workflows (transparent view of state) where you send and recieve messages. Worlflow modeld in XAML. Information pushed into config files at build time.
Workflow transactions handled by System.transaction.