Directly from the SQL Server Release Service blog, here the latest updates for SQL Server 2014 SP2, 2016 SP1 and 2017 RTM:
Cumulative Update #4 for SQL Server 2017 RTM
Cumulative Update #10 for SQL Server 2014 SP2
Cumulative Update #7 for SQL Server 2016 SP1
…Stay Tuned! 🙂