Credit to Bill Lutters who posted this information over on Kurt's board:

Disc 1: CHARLIE CHAN IN HONOLULU
Full Frame Feature
Reinventing Chan
Sidney Toler:The Man Who Became Chan
"Charlie Chan? Courage: A Re-creation of a Lost Chan Film"
Restoration Comparison
Still Gallery

Disc 2: CHARLIE CHAN IN RENO
Full Frame Feature
Welcome to Reno: America's Divorce Resort
Reno Memories
Chan's Killer Actress: Kay Linaker
Restoration Comparison
Trailer
Still Gallery

Disc 3: CHARLIE CHAN AT TREASURE ISLAND
Full frame Feature
Commentary by Film CriticKen Hanke & Film Historian John Cork
The Real Treasure Island
Charlie Chan & the Zodiac
Restoration Comparison
Still Gallery

Disc 4: CHARLIE CHAN IN CITY IN DARKNESS
Full frame Feature
The Making of Charlie Chan in City in Darkness
Writing Chan: Robert Ellis & Helen Logan
Restoration Comparison
Trailer
Still Gallery

Dear Steve,

Thank you for passing along this information. This will truly be a worthy continuation of the Fox Charlie Chan releases! The extra material appears to be top-notch, and the arrival of Volume Four should be eagerly awaited by fans...

Sincerely,
Rush