CodeIgniter 4.0.0-rc.2 released

Thank you, great work!
May I try to use the rc2 for production?
And so Does this version contains some critical things that you are not recommend to use in production?
Thanks a lot!

If you want to, you can go with it. I have been trying CI4 in my big project since it's still in beta version. The most important thing is you have to update your CI4 system regularly.