Yes, 

CTET will be conducted by National Testing Agency (NTA). But no new dates have been announced by NTA for CTET 2018. CBSE also has not notified any update regarding the Central Teacher Eligibility Test, CTET 2018 so far. CTET online form submission was supposed to commence last month on June 22.

As per the official notification, National Testing Agency (NTA) will conduct UGC NET 2018 for December session in computer-based mode. The exam will be held from December 2 to 16, 2018 in two shifts each day on Saturdays and Sundays. The application form of UGC NET 2018 for December session will be available from September 1 to 30. The result of UGC NET 2018 December Session is expected to be declared on the last week of January 2019.

Get all details about NTA - https://competition.careers360.com/articles/national-testing-agency-nta

Yes National Tesring Agency shall conduct CTET, Jee Main, NEET UG, UGC nET from 2019 onwards.

https://www.news18.com/news/india/national-testing-agency-to-conduct-jee-main-neet-ug-ctet-ugc-net-1573707.html

CTET expected ro be conducted twoce a year.

Right now in 2018,CTET will be conducted by CBSE.