Avatar - Extended Collectors Edition (2009) 1080p Access

According to technical reviews from Blu-ray.com and High-Def Digest :

The in 1080p is a comprehensive three-disc Blu-ray set released in 2010. It is widely regarded by enthusiasts as the definitive high-definition home release of the film due to its inclusion of three separate cuts and over eight hours of supplemental material. Movie Versions (Disc 1) Avatar - Extended Collectors Edition (2009) 1080p

The longest version, adding 16 minutes to the theatrical runtime. It features an exclusive alternate opening on Earth that provides deeper context for Jake Sully's life before Pandora. Technical Specifications According to technical reviews from Blu-ray

Includes approximately 8-9 minutes of additional footage, including the "Sturmbeest Hunt" and expanded battle sequences. Avatar - Extended Collectors Edition (2009) 1080p