Two Key Green Card Forms Just Changed — Here's What's New Green card sponsors and applicants have two new form editions to watch this fall. Form I-864, Affidavit of Support, already became mandatory on August 31, 2026, and Form I-485, Application to Register Permanent Residence, becomes mandatory on September 18, 2026. Filing the wrong edition of either form after its cutoff date means an outright rejection — USCIS is not offering a grace period for either change. Form I-864: