Microsoft posted the proposed list of SQL Server Code Name Denali upgrade paths and operating systems, and is soliciting feedback on their selections. Windows XP and 2003 are excluded, and versions of SQL Server may require service pack updates before a new Denali installation.
SQL Server Development Tools (SSDT), codenamed "Juneau", provide a new Visual Studio-based development environment for SQL Server. Some of its features are already available in Visual Studio 2010 Ultimate, but SSDT includes some key new additions such as the close integration of Database and Application Projects.
Imagine ad hock data mining queries against a single table with 1 TB of data and 1.44 billion rows coming back in roughly a second. This is the scenario Microsoft intends to support using 32-core machines and their new column-based storage engine.