Aoyama Thelma will release her new mini album "GRAY SMOKE" on September 16. 

This will mark the singer's first new release in about a year, and it will be comprised of a total of 6 songs. While her last album "Lonely Angel" was completely self-produced, she will work with Shimizu Shota, Furuya Kenji (Dragon Ash), and other male artists for the upcoming release. 

The album's art work and track list will be revealed at a later date.

Source: natalie
Thanks to minlilin for the tip!