Consumer builds of Windows will see SMBv1 disabled with the launch of the Redstone 3 release, which is expected to be ready in October or November.
As Bleeping Computer points out, the decision to do so was made five years ago. The SMBv1 protocol was developed in the early 90s and was deprecated in favor of newer network protocols four years ago.
Even if the WannaCry outbreak was not the primary reason why Microsoft will disable SMBv1, the protocol's abysmal security had something to do with the company's decision.Microsoft recommends users and developers to use SMB 3.1.1 as a minimum.
"It’s the main, but not the only," [Microsoft's Ned] Pyle told Bleeping Computer. "Besides security, the code itself was superseded by SMB2 and later for functionality; SMB1 brings no special value except ubiquity – SMB2 can do what SMB1 can, plus many other things."