
The title has been developed by the magazine's editorial director Julian Linley and will run with the strapline "Because there's more to life than Celebrity (who knew?!)".
Heatworld, which will be bagged with Heat, will be available tomorrow (March 3) and could potentially run as a weekly supplement to the magazine, though final details of its frequency have still to be decided.
The new title, which will have a pagination of about 50 pages, will, unlike Heat magazine, be celebrity-free, but will offer a humorous take on, for example, haircuts and wedding dresses.
Linley said: "Heatworld magazine will be unlike anything else on UK news-stands. The idea came from realising that the daft and the downright hilarious stuff we find ourselves obsessing about in the office isn't always to do with celebrities. And there's nothing more valuable to our audience than laughing out loud."
The brand extension follows on from Heat radio, which launched in 2003, and the website Heatworld.com.
Heat sold an average of 470,475 copies a week according to the latest magazine ABC figures - stable on the past six months, but down 11.7% year on year.