More EU Notices were issued 21st March (and one on 19th March) – here.
Reminder : the UK is a third country on 30th March 2019. Please read the EU notice that applies to your operations. Note also that EU Agencies (on the link) also issue Notices.
The EU-UK Withdrawal Agreement (subject to ratification) may change this date to 31st December 2020 with conditions (via transition clauses in the Agreement).
The EU-27 agreed today its guidelines for its negotiation of a EU-UK trade deal. These guidelines are here.