Ho Ho Ho! It may be January 2015 but the Christmas is not over at Marathon! You can pre-order TS Season 6 DVD with "Evil Ice Skater" episode on Amazon which is going to be released in February 2015. The total duration of this DVD is 130 minutes but the names of remaining episodes are not known.
Thats not all, you can already buy "Mission Versailles" board game with 1 DVD which appears to contain the following Season 6 episodes:
Both Evil Ice Skater and Mission Versailles DVDs have French audio (Dolby Digital 2.0) and are restricted to Region 2 (these DVDs will probably not be viewable outside Europe).