ETSI had published the latest TTCN-3 standards related to edition 4.7.1.
You may find new language elements and access the documents via the updated TTCN-3 Quick Reference Cards:
The final draft TTCN-3 edition v4.7.1 is available for approval. ETSI members may access the new documents via the ETSI portal “TC MTS Drafts” or click for: draft core language. In addition for all users there is a pdf available with the final draft. The final publication is expected in May/June 2015.
All parts of the TTCN-3 standard and extensions from 2014 have been endorsed by ITU-T Study Group 17 and are now published online in the Z series (Languages and general software aspects for telecommunication systems) with document identifiers Z.161 – Z.170.