V1504 Cyg is probably undergoing a superoutburst. The last reported superoutburst was in 2007 Aug. YYYYMMDD(UT) mag observer 20080408.074 <154 (Gary Poyner) 20080424.023 <151 (Gary Poyner) 20080502.098 <154 (Gary Poyner) 20080505.987 144 (Pavol A. Dubovsky)