To illustrate the point of support and software I made above, I offer the following for consideration by our learned Hikers...
Here is a list of 2007 announced releases that are EXCLUSIVE to each format; The source is from AVS forum where some members are keeping track on-going. Can't wait - some great titles!! and many more to be announced I'm sure....

BLU-RAY 2007
Gridiron Gang (1/16)
Resident Evil: The Apocalypse (1/16)
Alien Vs Predator (1/23)
Men of Honor (1/23)
Courage Under Fire (1/23)
Open Season (1/30)
Flyboys (1/30)
Hart's War (1/30)
Running With Scissors (2/6)
The Tailor of Panama (2/6)
The Sentinel (2/13)
Entrapment (2/13)
Broken Arrow (2/13)
Phone Booth (2/13)
Planet of the Apes (2001) (2/13)
Chain Reaction (2/13)
The Marine (2/13)
Ladder 49 (2/13)
Reign of Fire (2/13)
The Usual Suspects (2/13)
The Prestige (2/20)
Vertical Limit (2/20)
Stranger Than Fiction (2/27)
Casino Royale (3/13)
Dances with Wolves (3/13)
The Thomas Crown Affair (3/13)
Hoosiers (3/13)
Layer Cake (3/13)
Ice Age (3/13)
Dodgeball (3/13)
Commando (3/13)
From Hell (3/13)
Chicken Little (3/20)
Finding Neverland (3/20)
King Arthur: Director's Cut (4/3)
G.I. Jane (4/3)The Fly (1986) (4/3)
Tristan & Isolde (4/3)
Me, Myself & Irene (4/3)
Dude, Where's My Car? (4/3)
Turistas (4/17)
Pirates of the Caribbean: The Curse of the Black Pearl (May)
Pirates of the Caribbean: Dead Man's Chest (May)
Con Air (6/8)
Crimson Tide (6/8)
The Rock (6/8)
Cars (Summer)
The Recruit (Summer)
Open Range (Summer)
Remember the Titans (Fall)
Master & Commander (May)
Man on Fire (May)
Edward Scissorhands (May)
Predator (May)
Butch Cassidy and the Sundance Kid (May)
The Siege (May)
Independence Day (June)
I, Robot (June)
Cast Away (June)
Prison Break Season 1 (TBA)
24 Season 1 (TBA)
The Silence of the Lambs (April)
Hannibal (April)
Platoon (May)
The Graduate (May)
Battle of Britain (May)
A Bridge Too Far (May)
Ronin (June)
To Live & Die in L.A. (June)
A Fistful of Dollars (June)
Out of Time (June)
Walking Tall (June)
Bull Durham (June)
A Few Good Men (TBA)
Hostel (TBA)
Jerry McGuire (TBA)

HD-DVD 2007
The Sting (Universal)
Brokeback Mountain (Universal)
Half Baked (Universal)
Hollywoodland (Universal)
Planet Earth: The Complete Collection (BBC) The Mummy Returns (Universal)
The 40 Year-Old Virgin (Universal)
American PIe (Universal)
American Pie (Unrated) (Universal)
American Pie Presents: A Naked Mile (Universal)
The Aviator (Universal)
The Black Dahlia (Universal)
The Blues Brothers (Universal)
The Bourne Identity (Universal)
Conan the Barbarian (Universal)
Dante's Peak (Universal)
Dawn of the Dead (2003) (Universal)
Idlewind (Universal)
Inside Man (Universal)
The Lemon Drop Kid (Universal)
Pride & Prejudic3 (Universal)
The Return (Universal)
Scoop (Universal)
Se7en (Universal)

I'm not sure it's a huge factor, but if you believe 2007 releases of RECENT (2006) hits will play an important role, note the 2006 studio total box office results (from Hollywood Reporter):
Note the top 3 are BD exclusive studios for 2007 releases...

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LOS ANGELES (Hollywood Reporter) - A swaggering pirate, a hotshot roadster and a sexy new 007 helped bring moviegoers back to theaters last year, as domestic ticket sales recovered from a down year in 2005.

Along the way, Sony Pictures reached new heights, claiming 13 No. 1 releases and a domestic box office record of $1.698 billion.

Second-ranked Disney ($1.5 billion) claimed the top two films of the year with "Pirates of the Caribbean: Dead Man's Chest" ($423 million) and "Cars" ($244 million).

20th Century Fox held steady at No. 3 ($1.4 billion) thanks to a solid string of films including "X-Men: The Last Stand," "Ice Age: The Meltdown" and "The Devil Wears Prada."

Meanwhile, 2005 market leader Warner Bros. Pictures, which arguably had one of the most anticipated slates of the year, tumbled to fourth ($1.1 billion), because of such misfires as "Poseidon," "Lady in the Water" and a disappointing "Superman Returns," even though the superhero's long-awaited return did climb above the $200 million mark domestically.

Paramount Pictures ($953 million) made some gains thanks to its acquisition of DreamWorks, which provided the studio's top-grossing movie, the animated film "Over the Hedge."

Universal Pictures ($796 million) also struggled -- not only did it lose longtime chief Stacey Snider to DreamWorks, but it propelled only one film, the romantic comedy "The Break-Up," into the $100 million club.

New Line Cinema ($252 million) and MGM ($171 million) brought up the rear, with only one movie between them -- the latter studio's "Rocky Balboa" -- cracking $50 million.
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