Minis are pretty much the same as the personalised sticker feature that Google launched in Allo last year.
The idea is pretty simple, you take a selfie and the Minis app will scan your face and output a custom sticker set of up to 100 stickers which you can then share in messaging apps. According to Engadget who seems to have been given the inside scoop, the set will take ‘into account various characteristics like your skin tone, hair color and style, eye color, face shape and facial hair’.
It looks pretty simple:
— Google (@Google) August 27, 2018
The update hasn’t appeared in my Gboard as yet, so it may still be rolling out. Make sure your Gboard is up to date in Google Play and let us know if you see it.