This model was from a few years ago. Looks like there are still a few pairs available but they probably won’t last long.
Buy (North America):
And here’s another color scheme, white/navy/silver. This is the one Nick Matthew wears:
Buy (UK): amazon.co.uk
And here’s one more with a red styling. Nick used to wear these as well.
There are still a couple pairs available in Germany: dlsports.de
You can also have a look for these shoes at: ebay.com
Just found a yellow / silver / black version as well:
Looks like they have a couple pairs of these left at squash.com.au.