I'm Mosaic through Dec 31, 2022. As of January 1, 2023, no longer Mosaic so the flights I already have booked to return from holiday travel will exclude free checked bags (currently 2 at no charge). Since new program doesn't officially launch until Spring, JetBlue should offer the current benefits.perks for Mosaics during 1st quarter until the launch if they cared about their long-term loyal clientele.