FBschedules is guessing around mid to late January:
2025 FBS schedules released: Big Ten SEC Oregon State Washington State
Schedules unreleased (w/ date or guess?): ACC - mid-to-late Jan? Big 12 - mid-to-late Jan? CUSA - early Feb? AAC - late Feb? MWC - late Feb? MAC - Mar 1? Sun Belt - Mar 1? Notre Dame UConn
