Warner Home Video released ThunderCats: The Complete Series on Region 2 DVD featuring all of the first season in one set (instead of in two volumes) and all of season two in one set (again, instead of in two volumes).
Does anyone know the date of the Region 1 release? I cannot seem to find the information anywhere.
What does Region 1 and Region 2 mean?
I think I answered this for you over on He-man.org ;), but for anyone else interested, I don’t think there will be a region 1 complete set, as I think they would have released it by now.
The UK got the 4x Volumes (which mirrored the US releases, well except Vol.4 was missing the game feature), complete Season One and Season Two sets and a Complete Series set (all 130 episodes)
At a guess the individual volumes sold so well, that for a re-release it was more cost effective to sell the series in complete sets? So it is strange WB never released a complete boxset in the US, since the volumes sold very well. I’m sure I remember them outselling the classic Filmation He-Man series at the time…
Different countries have different regions. For example you can’t bring a U.S. dvd and play it on a European dvd Player because the region number doesn’t match.
Most DVD players these days can be made region free though. We have 3 region free players in our house 
I have loads of region 1 DVD’s in my collection including the Season 2 ThunderCats sets 
In this day and age, region coding has become a bit redundant really.
And this is why the Blue Ray are almost region free and can play in any system!
I’d like to see a Blue Ray release of the New Series
That would be even better if they included an uncut version of “Exodus”. 
Warner Bros. needs to release a complete-series DVD set of the original ThunderCats here in the United States. The show’s original masters are seemingly lost, so we’re stuck with the VHS quality. However, WB can enhance, color-correct, and sharpen the image so it’ll look near-decent. As for the original broadcast audio, a complete remastering/restoration and studio enhancement is required, therefore giving the audio new life.