
According to some rumours, Lee Hyori comeback is settled for july 2012.
Currently, Lee Hyori is the new MC with Jung Jae Hyung for the new nighttime music program called SBS 'You and I'. First show is going to be aired soon.
Here is the list of 2012 K-pop comeback rumours :
March: 2AM , 4minute, B1A4 , Dalmatian , Shinhwa, EXO (débuts), NU’EST (débuts), SPEED (débuts),GIRL’S DAY, N-Train
April: SHINEE , BEAST , CN BLUE , U KISS, new group from Cube Ent, new group from YG Ent.
May: INFINTE , BOA , SECRET , RAINBOW , ZE:A , AA
June: SON DAM BI , CHAOS, X-5, new group from DSP Ent.
July: Lee Hyori, 2PM , AFTER SCHOOL , F(X) , SPICA
August: 2NE1 , WONDER GIRLS , CHI-CHI, BOYFRIEND , MY NAME
September: SNSD , RANIA , A PINK
October: KARA , HITT , ORANGE CARAMEL
November: SUPER JUNIOR
Source: Daily Hyori & Yuhyunlove's Weibo