Third party cases/skins for new Retina MacBook Pro's

[gabe211]

When should we expect third party case makers like Speck and various others to release products for the new retina MBP's?

Does Apple give these case makers unit dimensions prior?

 

[soundtracker]

So far all I've seen are preorders, like this one: http://www.icarbons.com/collections/macbook-pro-15-with-retina-display