Google just released the 2019 version of Google Home mini, which is now called Google Nest mini. Google bought Nest, makers of other smart home devices, a few years ago, and now they are incorporating that name into the new products.
If you have been thinking of getting a Google Home mini, now you can get it (last years model) at a lower price.
Among the things they have changed in the 2019 model, is a new machine learning (artificial intelligence) chip that learns your habits without having to send data to Google. They also gave it a speaker with more bass capabilities, and visual feedback to help you find the volume buttons on the device (you can tell it to change volume instead).