The 900P series will ship in U.2 and AIC (PCIe) form factors, it uses the PCI Express 3.0 interface and will ship in 280GB, 480GB, 960GB, and 1500GB variants. These parts will be aimed more at consumers than at enterprise users, which hopefully means they'll be priced a lot cheaper than the enterprise-based Optane parts. At the moment, the Optane-based SSD P4800X 375GB costs $1,751 over at Amazon.
TweakTown reports the 900P series will offer read speeds of up to 2.5GB/s, write speeds of up to 2GB/s and 500,000 random 4K write IOPS.
Whether you will need an Intel platform for these new Optane disks is unknown. TweakTown speculates they may also be compatible with AMD's Ryzen Threadripper:
Our second clue is that vendors have made an effort to implement U.2 ports into some of their X399 motherboards. There is currently only one readily available U.2 drive for the consumer, the Intel 750 series of drives, the same series Intel's 900P is replacing. We knew that Intel would continue to use U.2 for its high-end consumer drives, and the fact that U.2 exists on X399 means that it's possible that the 900P could be compatible.Guess we'll find out soon.