We’d like to announce the availability of SSDT that supports SQL Server 2014 databases. SQL Server Data Tools for SQL Server 2014 CTP2 is pre-release software, does not support upgrade from an existing SSDT install or upgrading to any new versions of SSDT to be released,
The October 2013 release contains an updated installer that does not fail due to certificate validation of the chained MSIs. This release also contains a code change that will allow graceful handling of SQL Server 2014 CTP2 connections where not supported.
We are aware of a new issue today where installing SSDT will fail with the following message “A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.” This is due to an issue in the installer verification code with a SHA256 certificate that expired on 10/6/2013 and we are actively working to update the installer.