Arashi hosted last year, yeah? i believe i read somewhere KinKi Kids is hosting it this year. not 100% sure though. but it is confirmed KinKi Kids are going to be at Tokyo Dome for JE CDL this year.
i think this year's CDL will be similar to last years. since KANJANI8 will be at Kyocera Osaka Dome (KinKi Kids did this last year) and Takizawa Hideaki will be at Imperial Theater (again). i really just want every JE group there, darn it!
there will be 4 Johnny's representatives at Kouhaku this year: SMAP, TOKIO, Arashi, & NYC Boys. but i'm sure TOKIO will be at JE CDL since they've been doing Kouhaku/JE CDL since debut. not sure on Arashi, but i think they'll do the same thing as TOKIO. SMAP stays at Kouhaku.