If you are interested in this, take a look at NaiveSystems Analyze [0] which is a free and open source static analyzer for checking MISRA compliance etc.
Disclaimer: I'm the founder.
It has been battle tested with real customers in automotive, medical devices, and semiconductors. AFAIK this is the first FOSS tool that achieves commercial use standards (extensive ruleset coverage, low false positives based symbolic execution (which Coverity relies heavily on) and SMT solver, ...)
2023 is supported in the enterprise edition but not in the community edition yet. We gradually move features from EE to CE as new features added to EE. So you can expect 2023 support in CE in the future :-)
I'm not sure about the timeline because that depends on a lot of things. In the meantime I guess you could start with AUTOSAR C++14. MISRA C++:2023 is essentially built on top of that.
For enterprise edition simply email to hello[AT]naivesystems.com as noted in the README on GitHub
Disclaimer: I'm the founder.
It has been battle tested with real customers in automotive, medical devices, and semiconductors. AFAIK this is the first FOSS tool that achieves commercial use standards (extensive ruleset coverage, low false positives based symbolic execution (which Coverity relies heavily on) and SMT solver, ...)
[0]: https://github.com/naivesystems/analyze