According to an email we received today from Minds + Machines they are offering free domains in the new gTLD’s .Work & .Casa only on the Minds + Machines Registrar
“The offer is only valid for one more week, exclusively on Minds + Machines and the offer expires on June 15th, 2015”
The offer is valid for 10 .Work and 10 .Casa non-premium (standard names) domains “per customer”
Under the offer the first year registration is free, and renews at $5/yr thereafter.
Discount is applied at checkout.
It’s not clear at what time the offer expires on June 15th, but keep in mind Minds + Machines is based in London.