The NFL will not hold a supplemental draft this year. Tom Pelissero of NFL.com broke the news via Twitter:
The NFL just informed clubs it will not conduct a supplemental draft this year, per source.
— Tom Pelissero (@TomPelissero) July 1, 2020
The Collective Bargaining Agreement gives the NFL the option to hold a supplemental draft each year, but it is not mandated.
Under the CBA, the NFL may elect to hold a supplemental draft each year. The matter was discussed with the NFL Management Council Executive Committee, and in light of current conditions, the decision was made not to hold one.