To get admissions in IIIT-Hyderabad in [CLD] Bachelor Of Technology (B. Tech.) in Computer Science (CS) and Master Of Science (MS) in Computational Linguistics (CL) by Research  etc you will have to clear UGEE-CLD entrance and after the clearance of exam, interview will also be there. Also, the application forms are not yet released but tentatively these should be coming out in the monh of March 2018. You can also go through the below provided previous year information to get a rough idea about the same in detail -

All about UGEE

Good Luck!!!!