From what I can tell, it seems like nothing will change until the EU and the UK have come to an official agreement. There will also be a transition period until December 2020 to allow for more negotiations to take place. This will likely mean that very little will change for you and your wife until the new agreement is firmly in place. This article covers the issue in more depth.
Hope this helps!
I'm in the same boat, it seems like everything is still a bit up in the air. Hopefully, we will all be able to get some clarity soon.
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