In the U.S., the models are now available in Bellevue, Chicago, Dallas, Houston, Las Vegas, Portland, and Washington D.C. In Europe, the new cities include Barcelona, Brussels, Florence, Madrid, and Manchester.

Apple Watch Hermès has also expanded to Guangzhou, Macau, and Shenzhen in China, in addition to Melbourne, Australia and Dubai, United Arab Emirates.
Apple Watch Hermès has also been available for purchase online since January, while Apple began selling standalone Apple Watch Hermès bands through its online store yesterday for between $340 and $690 based on U.S. pricing.
(Thanks, Alan!)