almost 2 years ago - BjornB - Direct link
Greetings!

We just released patch 1.34.5 which is a minor patch to facilitate the launch of Europa Universalis IV on GOG. The contents of this patch should have no impact on your game on other platforms.

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######################## 1.34.5.0 ###########################
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# Other
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- Added integration for GOG.COM store.

**** THERE IS CURRENTLY AN ISSUE WITH GETTING THE PATCH OUT ON EPIC! WE'RE WORKING ON RESOLVING THE ISSUE ASAP - BUT IT IS CURRENTLY NOT POSSIBLE TO PLAY CROSS PLATFORM MULTIPLAYER WITH PEOPLE ON EPIC. OUR APOLOGIES FOR THE INCONVENIENCE ****

Previous 1.34 changes

1.34.4 patchnotes
1.34.3 patchnotes
1.34(.2 - first release) Changelog!  
almost 2 years ago - BjornB - Direct link
sjobenrit said: is the 1.34.4 version on steam? I cant find it

No, since the difference between 1.34.4 and 1.34.5 is pretty much nothing we didn't see much reason to clutter the list with it. The only reason for this patch is to facilitate cross platform multiplayer with people on GOG, since you need to have the same version to be able to play MP.