The Pro Carbon 6Fattie model is no longer listed on the Specialized website. You can still purchase the 29er version with the Carbon Pro build kit. The 29-inch version is compatible with 27.5+ wheels. Still dead set on 27.5+ wheels? The $4,400 Stumpjumper Expert 6Fattie features a SRAM GX Eagle drivetrain, Fox suspension and SRAM Guide R brakes. Solid buy.
The 6Fattie is an especially good choice for a dedicated beginner or intermediate riders who would like to push through those scary sections on the trail, or really get the feel of rolling around corners at speed. Even then, having a more traditional bike on hand to dial in the more nuanced aspects of bike handling seems wise. If you're obsessed with nailing the narrowest of lines or hitting the rails on the corners just right, the it's-cool-bro, whatever vibe might not suit your needs. Still, there are better bikes out there. The excellent and well-rounded Santa Cruz Hightower is more capable.