For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
1.4 will bring many changes to the PC version. We strongly advise making plans to back up your worlds and players prior to updating your game. More details here.
Begin your search for Journey's End information here and here. Please report bugs and issues for Journey's End here.
For issues you find with the Mobile 1.3 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
Now that the forums are back, I can finally update my status with 1.4 first impressions... so: Relogic couldn't even pull themselves together to version 188.8.131.52 and 184.108.40.206 correctly... both are actually 220.127.116.11, which may explain why I had to reinstall Terraria to get the 18.104.22.168 update. Great to see this 5 year old bad habit is carrying on into the 1.4 era.
Tomorrow will be an extremely busy day... of rewriting countless MSIL patches to get a Day One 1.4 compatibility update out for Terraria Tweaker. From now on, TT2 will be available in two flavors: 1.4+ as Terraria updates like the good old days, as well as a 22.214.171.124 compatibility version.