JMO, but the statements in the PR concour the buildout learning curve aknowledged by the company. I wouldn't expect more than a 10-15% improvement in buildout times from this point on.
Kinda nice the company just says after,, not befores, doesn't happen much in the startups, ie; new locations. Too early to tell, (but that's the whole point:)), but two in two- three days says a lot about serious implications for further rapid expansion.