1437 will be joining TNC as their new 5 position and will be taking over as the captain and drafting roles from Kuku. 1437 will be replacing ryOyr just before Starladder I-league Invitational #2. TNC's announcement makes it sound like ryOyr will be staying with them to some degree.
As for Ryo ‘ryOyr’ Hasegawa, the TNC Pro Team management has other plans for him in the near future. So make sure you stay tuned for announcements.
you can read the full announcement here: http://www.tncproteam.com/post/474