Directly from the Microsoft Release Service blog, here is the list of latest updates for SQL Server 2014 RTM and SP1:
Cumulative Updates #8 for SQL Server 2014 RTM
Cumulative Updates #1 for SQL Server 2014 SP1
Additionally, you can download the new SQL Server Management Studio. As in the Microsoft Release Service blog, the SQL Server Engineering Team says: “we are delighted to announce our first “preview” release of SQL Server Management Studio! This is our first effort to release SQL Server Management Studio (SSMS) in a mechanism outside of the SQL Engine releases. Our goal is to update this frequently with new features, fixes and support for the newest SQL Server features in SQL Server Engine and Azure SQL Database”
Stay Tuned! 🙂
Alessandro Alpi's Blog 