Galin Iliev's blog

Feature specifications are posted on MSDN so everyone who is interested how to write specifications or how looks like specifications inside Microsoft can take a look at Feature Specifications for Visual Studio 2008 and .NET Framework 3.5 in MSDN. All documents are in XPS format.

Technology Area	Feature Specification
Developer Tools Plaform	Command Bar Improvements
	MSO File Dialog Removal
	File Tab Channel Improvements
	IDE Navigator
	MSBuild Multi-Targeting
	Object Browser Support for New Language Features
	Segoe UI Font Support
	Tool Window Docking Targets
	Tool Window Frames and Tabs
	VS Color Service and VS Gradient Service: Vista Palette Addition
	Windows Framework Support in Object Browser and Find Symbol
	Menu Improvements
	Splash Screen Improvements
	Pseudo Multi-targetting
	Updated Branding
	Visual Studio Proxy Service
	Visual Studio Settings Migration
Visual Studio for Devices	eVC: VS2005 Migration
Visual C++	Friend Templates
	STLCLR
	.NET Framework Multitargeting in Visual C++
	Versioning of Visual C++ Libraries
	Asmmeta.exe
	Dialog Templates
	File Dialogs
	Marshaling Library
	MFC Support for Common Controls
	Scope Reduction in VC Libraries
	UAC for VC
	Vista Common Controls
Network Class Libraries	Internationalized Resource Identifier Functional Specification
VSTO & VSTA	VSTO & VSTA Project Upgrade
	VSTA
	Dynamic Programming Model
	Office Workflow Tools
Setup	Uninstall Wizard UI
UI Frameworks	ListView
UI Frameworks	Partial Page Rendering
Visual C#	Mapping Format
Visual C#	XLinq
.NET Compact Framework	Microsoft.WindowsCE.Forms.SystemSettings Extensions
Team Architect	Support for Web Application Projects
Team Architect	Architectural Roles
Enterprise Developer	ASP.NET AJAX: Debugging Breakpoint Mapping
Enterprise Developer	ASP.NET AJAX: Script Explorer in Solution Explorer

VS 2008 and .NET Feature Specifications