The release of the EP store will not affect the current pledge packages.
Nope.
The following website will have a list of the items that will be in the store. More stuff will be added. Lastly, the EP cost of the items will most likely change when the store is out:http://chroniclesofelyria.gamepedia.com/Exposition_Points
There is currently no plan of restricted items as far as I currently know.
Owner of the Blue Moon Inn & Tavern, the most grand tavern in all of Elyria. I am a gatherer and merchant by trade, skilled and cunning with the blade. I work with people of all walks of life.