I think it's a new feature which is going to be released tomorrow with update. Pretty sure it will require gold (just like breeding roost).
Unless they give us more options to grow food I don't have any dragons to evolve in a second temple...
This is what I think, too. I would be more than happy to spend gold on this anyway. I really hope it's just a second temple bought for gold, but wouldn't mind if it's a rechargable item.
For me that's no problem, I've got 466 hours on level 3 and 6 dragons and 1875 hours on level 9 dragons to evolce
In another thread, Kooky Panda said they were checking on this.
I also have a line of dragons longer than I could list waiting to evolve.
Hope it is real.
As far as I recall, it always said 1/2 which I found odd, given there was no second one available.
any update about this kooky?