Looks like xenial has 0.5, so that's consistent with the grandparent's claim. xenial-updates has 1.3.1, however. Seems like the best option for Ubuntu users would be to pull this from the xenial-updates repo. Also note that Xenial is about to be replaced by 18.04.

Also, be careful with universe packages. They are fast and loose with them. The version of redis commonly deployed on 14.04 has a known security issue that bit us some time ago (CVE 2015-4335). See https://bugs.launchpad.net/ubuntu/trusty/+source/redis/+bug/... .