When ANN asked the online JManga service about the future of the manga titles once published by Del Rey in North America, JManga responded:

JManga and Kodansha are working together to digitally release all volumes from each series that were originally available in print and continue each series by releasing all previously unavailable volumes.
JManga revealed on Thursday that it is adding manga titles from the Japanese publisher Kodansha. All the volumes in JManga's first batch of Kodansha manga were previously published by Del Rey in print. (Del Rey, JManga, Manga)