Per the proclamation:

"the entry into the United States of aliens as nonimmigrants to perform services in a specialty occupation under section 101(a)(15)(H)(i)(b) of the INA, 8 U.S.C. 1101(a)(15)(H)(i)(b), is restricted, except for those aliens whose petitions are accompanied or supplemented by a payment of $100,000 — subject to the exceptions set forth in subsection (c) of this section. This restriction shall expire, absent extension, 12 months after the effective date of this proclamation, which shall be 12:01 a.m. eastern daylight time on September 21, 2025."

So it applies to all H1Bs. Subsection c is limited (but will be interesting to see how it plays out) so I don't bother sharing.

Actual proclamation here: https://www.whitehouse.gov/presidential-actions/2025/09/rest...