What are "new gTLDs" and what are their connection with domain names?
"New gTLDs * " means new generic domain name extensions from the ICANN new gTLD program. In simple words, they are the new domain name endings which were made public in 2012 by the Internet Corporation for Assigned Names and Numbers (ICANN). The complete and official list can be checked here.
This is a five slides presentation which explains new gTLDs briefly.
* The exact meaning of "new gTLDs" is "new generic Top-Level Domains".