The women's title, which is set to go on to shelves on 3 September, is expected to be called Fate and Fortune.
The magazine will be aiming to capture what Bauer considers to be women's increasing interest in spirituality, New-Age therapies and astrology.
The saddle-stitched, 132-page magazine is expected to launch priced at £2.50 with an initial print run of 150,000.
The title will aim to offer the traditional elements found in women's monthly magazines including fashion, beauty and health, alongside features on astrology, holistic therapies and tarot-card reading.
The magazine will also aim to offer an eight-page pull-out collectable section taking a more in-depth look at various issues each month.
Project Rosie will be Bauer's second launch this year following the unveiling of the fortnightly title Real nearly a year ago. Real's first ABC figure for June to December 2001 saw it post a circulation of 173,988 - more than 20,000 short of its guaranteed circulation of 200,000. In February Real underwent a revamp and reduced the cover price from £1.50 to £1.
Bauer recently launched a website featuring circulation and readership details, advertising rates and production details.