Here is a good article about htat topic

http://moz.com/ugc/an-seos-guide-to-acquiring-new-gtlds

You might try searching for gtlds on Google too.

This is what Matt Cutts had to say

"Google has a lot of experience in returning relevant web pages, regardless of the top-level domain (TLD). Google will attempt to rank new TLDs appropriately, but I don't expect a new TLD to get any kind of initial preference over .com, and I wouldn't bet on that happening in the long-term either. If you want to register an entirely new TLD for other reasons, that's your choice, but you shouldn't register a TLD in the mistaken belief that you'll get some sort of boost in search engine rankings."

Here is an additional article about it:

https://www.tsohost.com/blog/how-do-new-gtlds-affect-seo

*edited for additional link