Jan 24 (Wed) to Jan 29 (Mon): GDL train strikes against Deutsche Bahn (6 days)

Ought to push this up the list as the date has arrived.

Have these negotiations gone on for months in the past? I have dodged one of these mini-strikes in the past. We are planning to visit in April. We have plane reservations in/out München in case we have to settle-in someplace.

Hope and best guess is that the situation is cleared until April.
This situation is enforced by chief of workers' union because he will retire soon. He acts like nothing to lose.
Both sides are looking forward for mediation because economy, society and politicians in charge start losing understanding and patience with the current situation.

In Berlin next strikes are possible because bus, subway and tram provider BVG has started loan negotiations.

I would also think that the situation will soon be resolved. Because neither the GDL union nor its members can keep up the strike for too long. The members have to survive on a €100 support per day and the (rather small) GDL itself will have to ask the trade union federation for help as soon as its strike fund will be exhausted. And that's where their problem comes in. Because the rival union EVG is also represented there, which has no interest in the GDL negotiating a better result for its members than it did for its own recently. This is Weselsky's last battle. Let's wish him that he gets off with a black eye, but that he is really gone by then.

It is a real pain. They will post at the station that a train will actually be there in 10, 20, 30 min. and then it doesn't show up. Then they do it again. Same thing. People are waiting around for a long time for a train that never arrives. I don't mind the strike as there are always other options, but it is not ok to post on the DB and local transport website and at the station that a train will be there, and then it isn't. Watched people yesterday, desperate to get to the airport and thinking a train would be there, because everything says yes, it will be. Wasting their precious time waiting, when they could have gone with alternate transportation.
The trams and buses are packed tight, standing room only.

Update and little good news:

The strike by train drivers on Deutsche Bahn's passenger services ends earlier than planned at 2 a.m. on Monday. The strike was originally announced until 6 p.m. on Monday evening and began last Wednesday.

There may still be restrictions on long-distance and regional services next Monday. "We ask our passengers to check DB's digital information media again on Monday in good time before starting their journey," says Deutsche Bahn. Passengers who had originally planned trips for the period of the strike between January 24 and 29 will still be able to use their train tickets.

How does Deutsche Bahn compare with European rail firms?
For the second time in a month, a nationwide strike has forced German commuters to choose between being stranded at a train station or stuck in a traffic jam. Deutsche Bahn (DB) employees have been on strike since Wednesday, leading to disrupted train schedules and congested roads in what's planned to be Germany's longest rail strike to date.
While not uncommon in Germany, these rail strikes are only one facet of the many challenges facing the national railway service. Passengers regularly grapple with prolonged delays and cancellations for a variety of reasons that go beyond labor disputes.

https://www.dw.com/en/how-does-deutsche-bahn-compare-with-european-rail-firms/a-68091079