here's a little more info on it. The quote at the bottom has the more basic info.
the short answer is yes, int the final version you'll be able to export your animation to sequential pngs, but it's made for a more powerful purpose. in a nutshell it will allow you to create an animated character from a collection of images, and at runtime construct classic(and eventually construct 2) will be able to load your characters, and arrange the multiple images in realtime, saving immense amounts of vram. This makes it possible to create larger, much more smoothly animated characters than traditional sprites, while at the same time using less gfx card power.
it has a number of other useful features, like character maps, that allow you to add custom items like shields and armor, and control their visibility at runtime, while these alternate costumes and such, won't require you to reanimate your character. Sound effects that can be controlled by your animation, pinpointing exactly which frame a sounds should play, and animatable actionpoints, which are like imagepoints in regular sprites, and an unlimited amount of hitboxes on a perframe basis, for things like fighting and action games, where you want to know not only that a collision took place, but also where on the character a collision took place. Also animatable variables that change based on where in an animation you are, or what animation you're on, etc.
longer term plans include freely deformable images, 2d bone skinning(some old proof of concept/prototype vids here) like ubi-art framework. Also procedural animation to allow dynamic animation to be generated on the fly, which when combined with the freely deforming sprites, will allow you to have dynamic characters, where each one looks and behaves differently than every other character, and characters who animate differently based on whatever variables you like, such as emotion, or fatigue.
There's lots more to it, but I'm off to code some more! the next update is long overdue, and I'm working very hard to release it as soon as possible