As reported by Reuters, these developments are likely to have an effect on the challenges to the prior travel ban pending in the courts. The Supreme Court is scheduled to hear oral arguments on those challenges on Oct. 10. (See prior posting.) Yesterday the Administration asked the Supreme Court to consider receiving additional briefs to address the effects of the new Proclamation on the pending cases. Washington Post has additional reporting on the new Presidential Proclamation.
UPDATE: In an Order (full text) dated Sept. 25, the U.S. Supreme Court ruled:
The parties are directed to file letter briefs addressing whether, or to what extent, the Proclamation issued on September 24, 2017, may render cases No. 16-1436 and 16-1540 moot. The parties should also address whether, or to what extent, the scheduled expiration of Sections 6(a) and 6(b) of Executive Order No. 13780 may render those aspects of case No. 16-1540 moot.