Kadosawa said on twitter that he will not be involved in the new members audition and interestingly he said that the last single he was involved with is Sakura Sankyuu which means that Summer Lion is produced under someone else. The last event he will oversee is TIF 2013.
Regarding the new producer, Kadosawa said that he is not allowed to announce who it is yet but it certainly isn't Mori-D
Kadosawa certainly left on his own accord and moving on to create another content for Fuji TV since he is originally employed by Fuji TV as a salaryman and by chance got involved in the Idoling!!! project.
I hope the new produced is someone who is familiar with the concept of Idoling!!! being a different kind of idol. Let's hope the new guy will not try changing them into a generic idol group.
@miitan There's TIF on 7/27 and 7/28 and AVEX Idol Nation on 8/10 if you are into other idols too. For Idoling!!! exclusive event, there will be handshake events on 8/10 and 8/11, Endo Mai single release events and Summer Lion release events both of which are yet to be announced. Hit me on PM if you need more info on tickets and stuff.