The webpage of the state Baden Wuerttemberg, always tells the latest update about the local COVID-19 rules.
HD University has organized for financial help for PhD students if Corona-related. Further information can be found here.
Max Planck PhDnet reports (surveys on general needs, wishes, and requests). Focus 2019: Working conditions, Scientific Environment & Support Structures, Power Abuse & Mental Health.
Finr them on the PhDnet website.
Here is the new seminar program of the HD University Graduate Academy (for WS 2020/21).