Unofficial installer of Firebird 3.0 Release Candidate 1 is available for download!

Are you looking forward to try Firebird 3.0 Release Candidate, and can’t wait for the official release? Download Firebird 3 Unofficial Installer and get Firebird 3.0 RC1 now.
http://firebird3.com/en/download-firebird-3/
If you want to install Firebird 3 as the second instance (and keep existing installation of Firebird 2.5 intact), you can specify another port and instance name for Firebird 3, and use both instances simultenaously.
Watch this video to and follow its steps to install Firebird 3 together with your Firebird 2.x: