We're in the transition period, in theory, to remove the prospect of a "No Deal" Brexit. We will then be able to negotiate any trade deals we want with anyone else, such as US, Australia or the Vatican. In that time, we'll also negotiate with the EU on our future relationship to cover various items that we've been not allowed to start on due to the way they wanted the talks structured - some contributions will stay until we go, some EU structural items will be in place, while others will stop.
Let's be honest, it will be a mess for good couple of years while people adjust to having to think when going to the airport, etc. Fair to say, regardless of the doom or green grass, no one has the foggiest how it will go.
At least those 50ps will be released to the world! I never thought such a stupid thing would trigger people so much