Go ahead and knock yourself out with this picture of the game poster. It can't get any more legit than this.
Picture of Lee sparring with a partner(unknown). I think he has great potential in the organization itself as the fighter who everyone fears.
Link to article on Bruce Lee pre- order bonus: http://www.kotaku.com.au/2014/04/ea-sports-ufc-gets-a-release-date-and-bruce-lee-as-pre-order-dlc/
Link to Wikipedia page on the EA Sports UFC game: http://en.wikipedia.org/wiki/EA_Sports_UFC
Official Gaming Pictures: http://nerdreactor.com/2014/04/07/ea-confirms-bruce-lee-as-the-ufc-mystery-fighter/
Alternative site: http://www.usatoday.com/story/sports/ufc/2014/04/07/ea-sports-ufc-brings-bruce-lee-back-to-life/7397313/
* Stay tuned for more announcements such as the reveal of the mysterious UFC character who most likely should be Bruce Lee
Update as of 5/16/14: Official game play of Bruce Lee in action. The dragon has finally left his lair.
More coverage on Bruce Lee's appearance in EA UFC will continue until the final release date.
All You Need To Know About Bruce Lee in EA Sports UFC: http://news.xbox.com/2014/04/games-bruce-lee-in-ea-sports-ufc
Here is the first showcase of game play in the EA UFC game, just if you are curious on what the game would look like: