The phrase "new cool" refers to something that is trendy, fresh, and appealing to people. It signifies the latest and most exciting ideas, styles, or products that are popular and admired by others. Full definition
This engine was upgraded with an optimized valve timing and new cooling system with shut - off valve. (topspeed.com)
As all knows that social media networks are continuously adding new cool features here and there and, it is too difficult for us to keep update ourselves. (blog.bufferapp.com)
It's just the sort of move that new cool kids can make. (harpersbazaar.com)