It's get a bit short mentioned that this vaccine is researched by a German tech company and Pfizer more or less only does the mass production. I haven't read a lot about it yet but would assume that the German and US government will have their fingers on it first, then probably other EU states. Even if the production itself is no bottleneck then vaccinate it will be for sure.
e.g. if you can vaccinate 150.000 people a week (which will be an immense number) you need 10 months for 6.3 million people, which is probably only 1/4th of the risk group and nurses, doctors etc. will be vaccinated on top of it. So even if the U.K. can start vaccinate people in the spring (which is a big question mark because everyone wants that), the thing needs literally years to reach 65% of the population. And nobody knows yet how long this vaccine will shield people.
It's a breathtaking science record and a finest hour in the fight of the pandemic but don't trick yourself. This is not gonna go away in the near future and society and politics will need to stay calm for probably 1 to 2 more years from now. BUT this is very promising if you consider the alternative route of living literally with the virus forever. So, yes, let's pop some bottles but it's not over yet.