If there is one thing Samsung has spent a lot of resources on in the last year or so, it is the company's KNOX security solution for mobile devices, with an aim to make it the de facto security standard in enterprises, challenging BlackBerry in a turf it has long held a monopoly over. Recently, in a surprise announcement, Google and Samsung revealed that part of KNOX would be integrated right into Android with the next major release (Android L), and according to Forbes, Samsung is following that announcement by stopping development on KNOX, letting Google take over.
According to Forbes, the market uptake of KNOX has been rather meager at 2 percent, though this could have changed quickly given its recent approval by the U.S. Department of Defense. The article isn't very clear on what Samsung intends to do, but it does sound like the company will stop touting KNOX to enterprises as a separate solution since it's now integrated into Android itself, and will likely make it a default feature in Tizen as well sometime in the future.
However, with no proper source mentioned by Forbes, this might just be a rumor that has no facts to back it up. Samsung will likely make an official announcement on the matter if it really is giving up development on KNOX, and we'll be sure to update our readers once that happens.