I'm interested if I still should use WTL to write Windows applications? I really like how it's written but does anyone know if it is still maintained? (Maybe there is a port that someone maintains unofficially?)
If WTL is not recommended to write new Windows applications, what new frameworks are there that I could look up and use?
The WTL was opensourced by Microsoft in 2004. Since then it's been updated by the community. The latest release (10.x) was 2021-11-10. You can check out the latest, see what they are working on, etc from SourceForge.
I don't see why you shouldn't use this to build your app.