[cyal8erloser]

As far as I can tell with the movie. there was not any official announcement.

And all the youtube videos seem to have some flaw or credibility issue. I'll try to look into it for you.

At the moment, hollywood is very interested in comics and anime for movies. The first being the most dominant. As you can see the fantasy elements to recent movies along with how well fantasy is doing now.
(Fantasy movies beyond children's films was a rarity.)

So I can not say for sure atm. Though, a DBZ movie is possible, I do not find it to likely.