No date available as yet and the basic trooper does not appear to be (as yet) available on his own, but the Heavy Gunner is. More in time as we still can't as yet order these.
The official blurb reads:
Hot Toys is pleased to present a 1/6th scale collectible figures set featuring the new streamline designed First Order Stormtrooper and Heavy Gunner Stormtrooper equipped with heavy artillery vest and a destructive megablaster from Star Wars: The Force Awakens!
The highly-accurate collectible figures are specially crafted based on the image of First Order Stormtrooper in Star Wars: The Force Awakens. Each Stormtrooper features a brand new designed Stormtrooper armor and helmet. The standard First Order Stormtrooper will be equipped with a blaster rifle and blaster pistol while the First Order Heavy Gunner Stormtrooper is armed with an articulated megablaster, a blaster pistol, and an artillery vest. Two specially designed hexagonal figure stands with the First Order’s emblem are also included in the set!
Click images to view higher res in a gallery.