http://www.cabelas.com/product/SMITH-WESSON-M-P-CF-PISTOLS/2437572.uts
Here is a list of 2.0 models at Cabelas. It includes both 4.25" and 5" black models in 9mm and .40 S&W.
The listing says the model 11521 black 5" is available, sku #04656551
This review says the 5" is available in black.
The New Smith & Wesson M&P M2.0: Making A Great Pistol Even Better—Hands-On Review. - GunsAmerica Digest
There are other sellers and reports out there that indicate the model you want is available now. It took me a couple of minutes using Google to come up with these and other references.
I know the feeling but S&W contacted me on FB and said there's no date in the near future for the black 5" but will most likely release one in the future.
They did not promise anything.
We need to remember that the 2.0 was made to compete against others in the military contract bid that Sig won.
Once a 5" 9 comes out I'll be all over it. FDE is nasty.