I'm not going to shoot any questions to Microsoft about RTM release for SQL Server 2008, as it was made it clear from The Data Platform Insider blog post as: Extract: "Over the coming months, customers and partners can look forward to significant product milestones for SQL Server. Microsoft...
Have you ever asked this question about how do I identify the queries that worth tuning? The simple answer it is neither easy or hard to obtain such information if you have managed your SQL Server by deploying industry best practices (wherever possible). Then it comes what kind of practice you should...