On July 1st, CMX Manga, a subdivision of DC, will officially be closed. CMX Manga has released works such as Tenjho Tenge, Emma, Crayon Shin-chan, and Kamikaze Kaito Jeanne. Megatokyo was a CMX Manga title but it will continue to be released as a DC Comics title after July.
There are no news yet if another manga publishing company will pick up any of the series CMX will no longer continue but time will tell. Titles formerly released by ADV, for examples, were picked up by other publishers when ADV closed.
If you like any of the titles published by CMX, now is a good time to collect the volumes before they become scarce and high-priced.