http://www.techradar.com/news/google-home-mini-release-date-news-and-rumors

Google's Home speaker is starting to look a little bit lonely. While Amazon has forged ahead adding numerous smart speakers to its Echo lineup, Google has stuck with just the one speaker, and has seemingly been content to allow third-party companies to bolster the lineup with speakers such as the JBL Link 300. 

However, that's all rumored to be changing at Google's upcoming Pixel 2 launch event, where Google is expected to launch the Google Home Mini, a new puck-sized smart speaker in the same vein as Amazon's low cost Amazon Echo Dot.