http://gunwatch.blogspot.com/2017/03/co-knife-law-reforn-is-on-governor.html
Signed into law on 23 March, 2017. I believe it becomes effective on 9 August, 2017.
If the blade is over 3.5 inches, the knives are still banned for concealed carry in the general ban on concealed carry of knives with blades over 3.5 inches.
Nice. Thank you.
I hope they’ll be available for purchase soon.