The 27-year-old, who is just two games shy of a half century of caps for his country, had been linked with a move away from Montpellier but has since joined star flanker and skipper Fulgence Ouedraogo in committing his future to the club.
"Exclusively for my fans, I've agreed to continue the adventure with Montpellier," was how Trinh-Duc announced the news on his Facebook page ahead of any official statement from the club.
Trinh-Duc is a product of the Montpellier youth system and has never played professional rugby for anyone else but it was thought that he could yet be lured away by one of the so-called bigger clubs in the Top 14, especially after he missed out on a place in the French squad for the last RBS 6 Nations campaign and the recent autumn series and was 'rested' for the summer tour of New Zealand.
Keeping hold of their star playmaker, who was named Top 14 Player of the Year in November 2011 after guiding his side to the domestic final, will be a huge plus for everyone involved with Montpellier as they go in search of a Heineken Cup quarter-final place for the second year running and a first French Championship crown.
Montpellier reached the knockout stages before being beaten by finalists ASM Clermont Auvergne in last season's Heineken Cup but defeat to Ulster in Round 2 of the current campaign - their first at home in all competitions this term - has put them on the back foot ahead of next month's double header with Leicester Tigers. Their form in the league suggests they could still be pushing for a place in Europe's last eight, though, with Trinh-Duc and co just three points off the top of the table after 12 games.
Throw in the recent arrival of All Black centre cum wing Rene Ranger and the off-season signings of the likes of Scotland lock Jim Hamilton, Springbok centre Wynand Olivier and France prop Nicolas Mas, together with the impending arrival of Wallaby second row Sitaleki Timani, and it's easy to see why Trinh-Duc has decided to stay put.