Which version of Taboo is the official version?
According to BGG, the original Taboo game was released by Hasbro in 1989. 

However, the company acquired the Parker Brothers (or the remains thereof) in 1991, which can explain why there's Parker-Brother-labeled Taboo games. Later Hasbro decided to get rid of Parker Brother mentions in 2013.

So generally speaking, there has only been one version of Taboo at all times, junior and themed versions and the like excluded.

The main differences over the year are


of course up-to-date cards (asking for current events gets a bit weird, when the game you're playing is ten years old)
a playing board used to track progress
different versions of sound device used to signal an error (some honk-like thing vs a classic buzzer)


There's a version called XXL with additional challenges besides the "classic" taboo cards, like drawing, some kind of puppet-charade and community-rounds.