It looks like the current generation consoles are selling quite well, with the Xbox One and PS4 sales being "close to" 50% ahead of where the PS3 and Xbox 360 sales were at the same time in their lifespan.
The news is coming from NPD Group's recent study into the current generation consoles, 21 months after they launched. A Microsoft spokesperson told IGN: "Xbox One and Xbox Live continued to see strong sales and engagement in July, with Xbox One sales in the U.S. up 44 percent over July 2014 and active global Xbox Live users (Xbox One and Xbox 360) up 22 percent".
Not only that, but game hardware sales also grew by 2% from June to July. NPD Group also said that the best-selling game in July was a surprise: LEGO: Jurassic World.