Yes.

France brought back a bunch of national night trains. ÖBB brought back Paris-Vienna, and they have more plans. Sbb brought back Amsterdam-Zürich, also planning train to Barcelona. Sweden wants to get back into Europe (not successful yet). Poland wants to connect west again.

There's a bunch of private endeavors: berlin-Malmo-stockholm is running more often, there's a startup starting a Prag-Berlin-amsterdam-brussels service in spring '22, another older company started Alps-munich-hamburg-coast this year. There's a startup that announced all sorts of impossible routes out of Paris. Another announced brussel-berlin.

The bottom on night trains was 2017. Jon Worth probably has a bunch of opinions about that.