Yes there are. The US two disc collector's edition has the four original features + two 'newer' ones:
A Groundbreaking Success
On Being A Cowboy
Directing From the Heart: Ang Lee
Sharing the Story: The Making of Brokeback Mountain
Music From the Mountain
From Script to Screen: Interviews with Larry McMurtry & Diana Ossana
Impressions From the Film - a photo montage [rather dull IMHO]
&
8 (collectible) postcards.
The same features are usually available also on other special editions (DVD) & on Blu-rays worldwide.
The "Behind the Camera" footage is to be found only on a few releases outside the English speaking world.
