Wide neck articulation Battle Jet (head).
Newly improved docking mechanism between Battle Jet and Battle Crusher (chest & shoulder), and a wide articulation range designed for the shoulder as well..
Battle Tank (torso) has a button to release it combination from Battle Marine (waist & legs).
Battle Marine has double joint for the knee, and Battle Craft (feet) uses magnet to connect between its left and right components.
December 19th release, 18,690 Yen (inclusive of tax).
All images are from Tamashii Web.