Confirmed spoiler for update 30/6/2016

Done :)

Yes the first reward is 7 day free devil/tinkerbell coupon worth up to 40 coupon or 44 cash

2. Improvement on edit function, 

There is some changes on dyeing the items straight away after purchase. I havent tried it, so cant comment much on it. 

In select multi now we can rotate (yes rotate multi as well) and deselect all (x symbol) yayyy

Introduction of design room, Basically you can buy 6x6 room already complete all wall, floor etc. U just place it. Convenience. It is also introduced 50 percent off, so event if u dont want the design, u can just buy the items (if u like the items) for 50% percent off

NOTE : I've calculate the price for the coin one(ROCOCO)  It is only the price of items. The design is free. So total items for rococo one price are 3.5 mill and half price for 1.79 mil.  The rest i havent calculate. 

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3. Re-release of marine theme

Beside above update the buy cash is 2x bonus , and special 1 day buff and 2 day hot deal is coming too.
I might post later the detail. Really sleepy X(

Source: Gamebiz.jp