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Almost in every game i've played,all item which is already introduce in game play are final product (well yes,there's a change sometimes but just for fix it not nerf or buff it)...

Maybe for next...

http://images.tapatalk-cdn.com/15/07/09/884ecdc5b0f4c5393634a153679fce87.jpg

http://images.tapatalk-cdn.com/15/07/09/d0d06786505a0f3f06bc8cf0df618c73.jpg

I really hope this is not intended to...

Exactly.
When an item is released, everything about it should be finalised before releasing.
Nothing on that item should be changed unless its affecting the gameplay.