You will have to wait for the official 3.1 release that has no official date or download from the engine website the last build of the 3.1 version. It’s very stable, I’m using it for a few weeks (since Beta1) and did not have any problems related to the engine.
If you download the 3.1 version, remember to make a backup of your project before opening it with tue 3.1 engine because if you do so, you won’t be able to open the same project on lower versions.
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