The ETS has only very recently announced at-home tests for people around the world (barring China and Iran for now).
From what they’ve mentioned on their website, here’s what we know about the test:
The exam pattern will remain the same, with breaks between section
For security reasons, the test will be monitored online by a trained human proctor from start to finish.
For this reason, your computer will need to meet certain requirements before you can register to take this test
Now, I do know that ETS is conducting a webinar for test-takers to explain how the test will be conducted. The webinar is free to attend.
Source: https://galvanizetestprep.com/covid-resource-page/#ITAutm_source=Forum