The CDC announced that COVIDtests.gov will re-open at the end of September. Households across the country can order four additional over-the-counter COVID-19 tests for free. These tests will detect the currently circulating COVID-19 variants and are intended for use through the end of 2024. You can also find instructions on how to verify extended expiration dates for any tests you may already have. To order four free, over-the-counter COVID-19 tests, visit COVIDtests.gov.
https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/home-otc-covid-19-diagnostic-tests
https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/sars-cov-2-viral-mutations-impact-covid-19-tests