"Rebrightening of the very fast RN M31N 1960-12a" (ATel #12915):
http://www.astronomerstelegram.org/?read=12915
The previously observed eruption of this very fast recurrent nova in the Andromeda Galaxy was detected on 2013 May 27 (ATel #5091):
http://www.astronomerstelegram.org/?read=5091
Clear skies,
Patrick