Starting July 30, 2025, USCIS will only accept the 01/20/2025 edition of Form I-129, Petition for a Nonimmigrant Worker. Until July 30, the 01/17/2025 edition will still be accepted. Form I-129s are filed on behalf of individuals planning to enter the United States to work or train temporarily or can be used to file a change of status or an extension of stay for certain nonimmigrant visa holders.
You can find the edition date of your Form I-129 on the bottom left-hand corner of the document.