So here were are in this fresh forum, and in the recently-created BGG entry for Evolution: Climate. Climate is the second expansion to Evolution. Before Climate had its own BGG entry, it was being discussed on the forums for Evolution and Flight, the first expansion.
The purpose of this post is to summarize, and link to, highlights of those earlier discussions of Climate. It is not to make or report promises about Climate. It's too early for promises: hence the use of the word forecast in the subject.
Highest of the highlights. this video preview: Joel Eddy of Drive Thru Review interviewed Nick Bentley of North Star Games (publisher, hereafter referred to as NSG) at GenCon 2015. Click on the link for the video, stay to read the comments (and then come back here, if you like).
Important, but easily missed, remark about Evolution expansions. The Evolution game system is going to be designed so that you choose 1 expansion to play with the base set. So NSG recommend that you choose between Climate and Flight, rather than adding both to the base game at the same time.
Climate timeline: NSG will start the Climate campaign [on Kickstarter] around February  to make sure that rewards get to backers before pre-release at GenCon (August 4-7, 2016).
Again, this is a forecast for next year's Climate. As Yogi Berra said, "It's tough to make predictions, especially about the future." See you there (in the future, that is).