Microsoft Dynamics CRM 2015 Update 0.1 has been released for on premise customers. This includes a number of small enhancements and minor fixes. For a complete list of what is included please go here:

https://support.microsoft.com/en-us/kb/3010990
Should you update?
At this time, there is a potential issue with importing backups of existing organizations. We recommend that you do not install the update if importing backups is a critical function of your organization.
Understanding the Issue
After the update, in Deployment Manager, when importing backups or copies of any CRM organization you may see this error: Could not find stored procedure ‘p_CreateAuditEntry’
This error is contained in the log file:
16:28:30| Error| Error while updating organization information: System.Data.SqlClient.SqlException (0x80131904): Could not find stored procedure ‘p_CreateAuditEntry’.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
Solution
We have a ticket open with Microsoft and are working on a workaround and will post here as soon as one is found. In the meantime, if importing backups of existing organizations is a critical function in your existing process we recommend delaying installation of Update 0.1 for Microsoft Dynamics CRM 2015.
Happy CRM’ing!