We just released 0.1.89 (special release to include the shellshock chisel) a few hours ago, so distribution maintainers aren't that fast: https://github.com/draios/sysdig/releases

Debian is currently at 0.1.88: https://packages.debian.org/sid/sysdig

And Ubuntu periodically merges all the unstable packages from Debian, so that's why they're lagging one version behind at this moment.