The presentations from SNIA's SDC 2009 are now publicly available for download. This SNIA event happened in Santa Clara, CA last September and the decks are now publicly available, after being restricted to conference attendees for a few months.

Out of the dozens of presentations, I wanted to highlight a few that were delivered by people from Microsoft:

ATA Trim/Delete Notification Support in Windows 7
Neal Christiansen
http://www.snia.org/events/storage-developer2009/presentations/thursday/NealChristiansen_ATA_TrimDeleteNotification_Windows7.pdf

BranchCache: Next Generation Branch Office Optimizations
Ravi Rao, Molly Brown
http://www.snia.org/events/storage-developer2009/presentations/monday/RaviRao-MollyBrown_BranchCache.pdf

Caching SMB Data for Offline Access and an Improved Online Experience
Molly Brown
http://www.snia.org/events/storage-developer2009/presentations/monday/RaviRao-MollyBrown_BranchCache.pdf

DFS-N Overview and Scalability
Marcello Hasegawa, Saad Ansari, Jose Barreto
http://www.snia.org/events/storage-developer2009/presentations/wednesday/SaadAnsari-Hasegawa_Barreto_DFS-N_Overview-rev.pdf

File Server Capacity Tool (FSCT) for CIFS/SMB/SMB2
Jose Barreto, Bartosz Nyczkowski, Jian Yan
http://www.snia.org/events/storage-developer2009/presentations/tuesday/BartoszNyczkowski-JianYan_FileServerCapacityTool.pdf

Green Storage in the Data Center
SW Worth
http://www.snia.org/events/storage-developer2009/presentations/monday/SWorth-GreenStorage_SDC_2009_2.pdf

Managing Storage of Virtual Machines with Microsoft System Center Virtual Machine Manager (SC-VMM)
Madhu Jujare
http://www.snia.org/events/storage-developer2009/presentations/tuesday/MadhuJujare_ManagingStorage_Virtual_Machines.pdf

Microsoft Network Monitor 3 (NM3)
Paul Long
http://www.snia.org/events/storage-developer2009/presentations/wednesday/PaulLong_TShootSMBwithNM3-rev.pdf

Microsoft Storage Management Update
Mohamed Lawindi, Michael Brasher
http://www.snia.org/events/storage-developer2009/presentations/wednesday/Mlawindi_MikeBrasher_Microsoft_StorMgmt_v1.pdf

SMB v2.1
David Kruse
http://www.snia.org/events/storage-developer2009/presentations/tuesday/DavidKruse_SMBv21.pdf

SMB2 Model Based Testing
Nico Kicillof, Albert Lee
http://www.snia.org/events/storage-developer2009/presentations/tuesday/NicoKicillof-AlbertLee_SMB2ModelBasedYesting.pdf

Understanding Windows File System Transactions
Christian Allred
http://www.snia.org/events/storage-developer2009/presentations/tuesday/ChristianAllred_UnderstandingWindowsFileSystemTransactions.pdf

Using Data Classification to Manage File Servers
Adi Oltean
http://www.snia.org/events/storage-developer2009/presentations/tuesday/AdiOltean_UsingDataClassificationToManageFileServers.pdf

I would also encourage you to check the full list of presentations from SDC 2009, visiting the site at
http://www.snia.org/events/storage-developer2009/presentations/