Word just released: https://www.united.com/ual/en/us/fly/travel/covid-testing.html . For a four-week trial starting Nov. 16, all passengers on this United Newark-London flight will get this test for free, and it will be required. As I understand (with word just in) it doesn't clear passengers of the requirement to quarantine in the U.K., and it isn't the PCR test that many countries require. It may be an effort to push for a way for transatlantic travel to reopen.