If at any moment you get a higher tier item, you can keep it there until the time is right. (altchar.com)
However, its replacement is a collection of tiered items categorized by theme and laid out not much unlike the skill trees. (gamerstemple.com)
Autographed copy of Alice: Madness Returns, Xbox360 Edition + all previous lower Akaneiro reward tiers (note: higher tiers DO NOT include this as a lower tier item, please e-mail through Kickstarter if you have questions) (kickstarter.com)