Launcher showing my Current Version 1804 but Latest Version 2089.
I have auto update in the games settings checked so is version 1804 the latest build WITHOUT the DLC or are we waiting on GOG to roll out the latest version to GOG client for auto update?

Other option appears to be click UPDATE on Kerbal Launcher to go to Devs site and update manually but i don't have an account ect and assume we are waiting on GOG to auto update through the Client??

Have you updated the GoG client? I know that I needed to do that to get access to the DLC when it become available. GoG client and game both say they are 1.4.2089 at present.

All good if i click "play" on GOG client or use a shortcut linking to the .exe in the instal folder.
I used the KSP launcher and that was showing me the wrong version.