I don't know if this is new :

You can now ask for Wave on your Apps domain...

https://services.google.com/fb/forms/waveforapps/

it was added tonight

Where did you find the link?

Nothing in the expected place: http://www.google.com/enterprise/marketplace/viewVendorListings?vendorId=1012

wave.google.com

Ah!
:)

I don't think it will appear in Google Labs Solutions Marketplace which from my understanding is only containing App Engine app. It's a new service like docs/sites/contacts/etc. It's not the same system of activation.

But maybe I'm wrong.