From Apple’s official press release:

Customers in Canada, Mexico, and the US will be able to order HomePod mini beginning at 7 a.m. PDT on Monday, November 1. Customers in China, Hong Kong, Japan, and Taiwan will be able to order HomePod mini beginning at 6 p.m. PDT on Monday, November 1.

And:

HomePod mini will be available in Australia, Austria, France, Germany, India, Ireland, Italy, New Zealand, Spain, and the UK later this month.

Check out the video below to see the new colors, in hand. Unless you care for unboxing, skip ahead to about 3:15 in. If you have one of the new yellow, orange, or blue iMacs (but NOT the purple, red, or green), you can be matchers.

I agree with Brian Tong here. I’d love to see Apple complete the set here.