Anything iPhone 5 or lower will not - 10.3.3 fixed one of the issues, but 2 more exist.
I do wish they would at least put out a 10.3.4 to fix the security issues, but I understand not putting the resources into a phone from 2012; I'm happy to at least have gotten 10.3.3 considering my Nexus 5 stopped getting updates last year and it was release in 2013.