[UPDATE] Activision has now formally announced Guitar Hero Live. You can see some footage and GameSpot's impressions in the video above, or read our written preview here.

The original story is below.

Details of the long-awaited revival of the Guitar Hero series have been published early ahead of an official announcement expected to be made on Tuesday.

The new project, called Guitar Hero Live, appears to re-introduce the seminal music rhythm series in the first-person perspective, with players stepping into the skin of a rock star.

Details were published early by French newspaper Le Monde and syndicated by Yahoo France, in an article that also includes quotes from the game's developers at UK studio FreeStyleGames.

The original Lemonde article, which has now been pulled, also described a redesigned guitar peripheral, featuring two rows of three keys.

Further details of the project are scarce, for now, though various reports across the web have suggested that an official announcement is expected to be made later on Tuesday.

In February, inside sources revealed that Activision and FreeStyleGames was working on a "more realistic" Guitar Hero title. The project will be the first new release in the series since 2010's Guitar Hero: Warriors of Rock.

Meanwhile, the stage is also set for the rival series Rock Band to make its return to the market this year. Rock Band 4 is expected to ship on Xbox One and PlayStation 4 by the end of 2015.

Sales of both Guitar Hero and Rock Band games peaked in 2008 and 2009, and subsequently plummeted due, in part, by market saturation.