In April 2011, K-On! manga returned with the characters split into two series in two magazines. The adventures of the main cast in college ran in Manga Time Kirara, while a second series featuring high school light music club members Azusa, Ui, and Jun started in Manga Time Kirara Carat. Now both are ending.
Early this month, Manga Time Kirara announced that next issue, on sale June 6th, will feature the final installment of the latest run of Kakifly's K-On!
Looks like Azusa, Ui, and Jun will be joining Yui, Mio, Mugi and Ritsu in the manga ether. The new July issue of Manga Time Kirara Carat has announced its highschool version of K-On! ends in the next issue.