I think Martin said November..? Seems kinda far away but I suspect that it's because a supplier must ramp up large-scale production between then now and then. But yeah, until then I think you must order direct from his website.
Beneath this mask there is an idea.....and ideas are bulletproof.
I think it will be available sooner than Nov - next couple of weeks probably - that was the info from one of the UK retailers I normally use. Also, Martin has said in the past he can only take Paypal orders for things that are within 4 weeks of shipping and the Treefrog site is taking orders for the non-limited edition.