The Math REU season is underway, with initial offers sent from programs like Emory, UCLA, UCSB, and UMN Twin Cities. Many applicants are seeking information on which programs send rejection letters, as last year's experience showed delays in responses. The UMN program is highly regarded for its mentorship and research output, with some participants considering whether to wait for shortlist responses. Several applicants have received offers from various institutions, while others are still awaiting news from programs like Clemson and Berkeley. Overall, communication with programs is encouraged, and applicants are reminded to decline offers they do not intend to accept to help others.