By the way, this blog post does not mention that Microsoft already effectively killed SHA1 last year when it announced that it wouldn't accept SHA1 certificates after 2016: http://blogs.technet.com/b/pki/archive/2013/11/12/sha1-depre...
The deadline for websites to upgrade their SSL Certificates is January 2017.
In January 2016, Microsoft will stop trusting code signed with a SHA1 certificate, unless it was timestamped prior to that date. In that case it will continue to be trusted until SHA1 is found be vulnerable to pre-image attack.
The post says that in Chrome 41 (Q1 2015) the https will display in red with a strikethrough, which is more than a small visual warning.