That's right, a new live-action Dragon Ball movie is in development, although details are scarce. I don't have a really trustworthy source but this is from Anime News Network: "This year's 33rd issue of Shueisha's Weekly Shonen Jump magazine is announcing on Saturday that a new film adaptation of Akira Toriyama's Dragon Ball manga has been green-lit.
The official website for the magazine had already opened a "D" teaser page with a countdown to a "surprise" on Saturday, July 14."
The link to the countdown site is here: [ http://shonenjump.com/j/countdown/]
EDIT: Although I already commented this, people tend to not read the comments. They then start repeating what has been said even though I'm already aware. I made a mistake when I put live-action as that had not been confirmed and it was actually animated. It was a baseless assumption by me and and I am sorry about that. However, the fact still stands that a movie is coming out. So instead of repeating the same thing over and over, maybe some of you guys actually have some speculation or actual thoughts about the subject.
EDIT: Here's a link on our very own wiki. It looks like Toriyama has a big hand in this movie which makes me very excited about it.