Manga Time Kirara K-ON manga is going to be resumed in Two different Magazines in April.
Manga Time Kirara (May issue) will resume the story from when Yui, Mio, Ritsu, and Mugi are all attending college. It will debut on April 9th.
Kirara Carat (June issue) will carry a version of the story featuring Azusa, Ui, and Jun in highschool. It will commence in April 28th.