This seems to happen with Michelin every year...
The last two years in a row the Anakee 2s went on backorder for at least a month and a half come fall.
I'm learning with Michelin to buy an extra set to have on hand when I ready for a new tire. Then replace the spare. But then again I rely on my bike as my primary transportation which means I go through at least 2 rear tires a year... no need to worry about them going bad in my garage.