The rocker made the announcement on Monday (05May14) via his new website, which also features his art and comic strips.
He writes in a blog post, "I am beyond thrilled to finally have a place to share everything I make. I imagine you’ll see/hear everything from blog posts to images, art, drawings, music, big projects and small projects.
"I am continuing full-steam into comics, art, and more importantly to some of you - music. I am pleased to let you know I am now signed as a solo artist Warner Bros. Records. My album is near completion, and you should expect to hear things in the near future, even today actually - with a brief snippet of what is to come. I am excited. It’s starting again."
The Welcome to the Black Parade hitmakers disbanded in 2013 after 12 years together.