Rheinmetall also started building a new ammunition factory for 155mm shells yesterday. It will take 12 months and then they can start with 50k shells/y which will increase to 100k in year two and 200k later on.
Ramping up the production now is a "good sign" (would be better to spend it on education everywhere tbh), BUT it's way too late. Should have started it by end 2022 at the latest.