http://www.newsweek.com/delta-ay-variant-ay4-2-urgent-research-scott-gottlieb-fda-which-us-states-uk-1639842

A new COVID Delta offshoot that scientists have voiced concerns about as it spreads through the U.K. has also been detected in the U.S.

However, there have only been six U.S. cases reported and it does not appear to have been spreading recently in the states.