訂正

There will be no change to the rights and status of EU citizens currently living in the UK until 30 June 2021, or 31 December 2020 if the UK leaves the EU without a deal. You and your family can apply to the EU Settlement Scheme to continue living in the UK. The scheme will open fully by 30 March 2019.

少なくとも、5月の時点では変わらないようですね。