Most awaited SQL Server Denali CTP3 has arrived atlast:) Microsoft has announced a public release of CTP 3 today. Also SQL Server 2008R2 SP1 was released Yesterday!
Please note- this is a 180 day Eval edition which Microsoft released today.
You can download from microsoft SQL Server Site or from https://www.microsoft.com/betaexperience/pd/SQLDCTP3CTA/enus/
Thought of posting all versions and Service Packs in one single place.
SQL Server 2005 SP1:
http://www.microsoft.com/download/en/details.aspx?id=22954
SQL Server 2005 SP2:
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=9969
SQL Server 2005 SP3:
http://www.microsoft.com/download/en/details.aspx?id=14752
SQL Server 2005 SP4:
http://www.microsoft.com/download/en/details.aspx?id=7218
SQL Server 2008 RTM:
http://msdn.microsoft.com/en-us/sqlserver/bb671149.aspx
SQL Server 2008 SP1:
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=20302
SQL Server 2008 SP2:
http://www.microsoft.com/download/en/details.aspx?id=12548
SQL Server 2008R2:
http://msdn.microsoft.com/en-us/evalcenter/ff459612
SQL Server 2008R2 SP1:
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=26727
Important Note:Please consider cpu (32 Bit vs 64 Bit/Itanium vs Intel/AMD) before downloading. Choose IA64 or x86 or x64 while downloading depending on your Server.
MSSQLTREK 