updated 02:50 pm EDT, Tue November 1, 2011
Follows Android update
Google has released a new version of its Google+ app for iOS, v18.104.22.16891. The update primarily supports using Google+ with Google-hosted custom domains via Google Apps. It also makes some improvements to Messenger however, implementing typing notification and presence features.
Minor changes include bugfixes and performance tweaks, as well as the extension of +1 support to photos. The iOS update follows the release of an Android update late yesterday. The Android code made substantially more changes, for example overhauling the interface to parallel Android 4.0.