Google Allo update brings incognito mode for groups, link preview, more
Google Allo's head of product has just tweeted about the new features the Android app is getting in the latest update. The most important seem to be the fact that users will be able to do backup chats and restore them whenever they wish.
The new update has already been pushed to the Google Play, so if you already have Google Allo installed, you might want to check for the new version.
source: Amit Fulay via Droid-life
Things that are NOT allowed: