On March 19, 2018, the UK government and the European Commission published a draft withdrawal agreement which includes the legal text agreed by the negotiators on the post-Brexit transition period. The draft agreement is available here.
The transition part of this latest draft is very similar to the European Commission’s previous draft of March 15, 2018, which already contained a number of amendments that appeared to reflect the UK’s position.
The UK government has now agreed that the transition period will end on December 31, 2020.