Here in Germany, people usually use hydronic heating and it's probably gonna stay that way. However, people are waking up to the reality that A/C systems are becoming more relevant, so some people have started to install split A/Cs for heating and cooling. I think there are no subsidies for that though.
In Germany newly installed heating will have to run with at least 65% renewable energy by law. How you achieve that is your decision. All electrical forms of heating check that box due to our electricity mix.
No, sales of new heating systems in regions with a municipality heating plan or in a new built house in a new development has to meet his. The heating plan has to be finished by 2026 for cities or by 2028 for everybody else. Also district heating is also an option and gas heating using hydrogen or biogas are also option, even whne they do not have the required 65% green gas content.