It sounds to me that if you own Mimic 2 Pro and/or Mimic for LW and bought Mimic 3 already, then you've been given a $10 gift certificate. (I can vouch for that one.) If you haven't purchased Mimic 3 yet, but you own Mimic 2 Pro and/or Mimic for LW, then you should find a coupon in your account. (If you don't see the coupon in your account, try putting Mimic 3 into your basket and going to checkout. Look at the bottom of the page and see if there is an additional $10 discount in there.)

It's one or the other: gift certificate if you already bought it, coupon if you haven't bought it yet.

I found out about this from reading Bryan's post, which I mostly quoted above. I don't have any insider info on this.

Cheers!