Metalocalypse: The Doomstar Requiem - A Klok Opera is a rock opera special for the Adult Swim animated series Metalocalypse. It was announced on May 10, 2013, by Adult Swim and was released on October 27, 2013. The special picks up directly after "Metalocalypse" season 4. It featured all new music from Dethklok, which was released on a soundtrack album on October 29, 2013.
A little over one year passed between the time Metalocalypse: The Doomstar Requiem was announced and the time it aired.
The sentence said the announcement was in May and the show aired in October. That is only 5 months, not more that a year.
( z1 pass :ARG1 ( z2 over :op ( z3 temporal-quantity :quant 1 :unit ( z4 year ) ) :quant ( z5 little ) ) :time ( z6 between :op ( z7 announce :ARG1 ( z8 broadcast-program :name ( z9 name :op "Metalocalypse:" :op "The" :op "Doomstar" :op "Requiem" ) ) ) :op ( z10 air :ARG1 z8 ) ) )