SQL Server 2008 R2 Edition

SQL Server 2008 R2 now has three types of editions:
  • Premium Edition
  • Core Edition
  • Specialised Edition
SQL Server 2008 R2 Edition
  • SQL Server 2008 R2 Datacenter Edition
  • SQL Server 2008 R2 Parallel Data Warehouse Edition
  • SQL Server 2008 R2 Enterprise Edition
  • SQL Server 2008 R2 Standard Edition
  • SQL Server 2008 R2 Developer Edition
  • SQL Server 2008 R2 Web Edition
  • SQL Server 2008 R2 Workgroup Edition
  • SQL Server 2008 R2 Express Edition
  • SQL Server 2008 R2 Compact Edition
What's the difference between SQL Server 2008 and SQL Server 2008 R2?

SQL Server 2008 R2 Standard now has compressed backups.

SQL Server 2008 R2 Express Edition now has a 10GB limit as opposed to a 4GB data file limit in SQL Server 2008 Express and SQL Server 2005 Express.