The Russians have had a thermobaric round for the RPG-7 since 1988, the TBG-7V. They also have had a similar round for the RPG-29, the TBG-29V, since the 1990s.
It seems we in the West are still playing catch up with giving the infantry thermobaric ammunition.
http://world.guns.ru/grenade/gl02-e.htm RPG-7 and ammunition.
http://www.olive-drab.com/od_infweap...viet_rpg29.php RPG-29