Coal (actually lignite) is a major part of Germany's plan. I don't expect them to abandon it anytime soon. Solar and wind power are inherently variable, they can't really work by themselves, they need to be backed by hydro (which is limited), storage (still not viable on a large scale) or easily adjustable power plants.
And that's where coal comes in. Germany is actually building new throttlable coal plants in order to complement their renewables. It is a good economic choice: they have a lot of locally available lignite, and it has little export value, so they might as well use it for themselves. It is also good for national sovereignty because they don't depend on imports. Unfortunately, it is also the worst possible fuel when it comes to CO2 emissions, that's why they fare rather poorly despite all their renversables.
Nuclear has no place in their strategy. With their renewables+coal, they don't really need the base load capabilities nuclear powers. Nuclear plants can be throttled to some extent but in order for them to be economically viable, they need to be as close to 100% as possible due to their high capital costs.