CI3 or CI4

I've got one live site and another upcoming project on CI4 4.0.0 RC3. Knowing that Codeigniter 4 is moving from RC to general release in the next 5-6 weeks has given me confidence to move all my current and future development to CI4. In general, it's very stable now and wicked fast.

That said, for somebody who has been using CI2 and CI3 for years, there was definitely a learning curve... so factor that into your decision. While the basic features and concepts are the same, CI4 is a complete rebuild and just about everything is done a little differently.

If you do a production project in CI4 right now, I'd encourage you to use the Appstarter library and lean on Composer to manage  upgrades and updates. That way you can upgrade to 4.0.0 as soon as it's available.

https://codeigniter4.github.io/userguide...poser.html

Thank you very much for your answer. I've been using CI for more than 12 years. Last years I had pause with it so I lost focus :-) I will go with CI4, I looked at docs and I like it.