Specifically, Engine Yard said that the first release of Engine Yard Labs — a program to give developers early access to new features — will include support for Node.js. That access will be enabled on Friday, the company said.
There is a caveat however. According to a blog post announcing the news:
Features released through Engine Yard Labs are not officially supported and may or may not become supported as part of Engine Yard products in the future.
San Francisco-based Engine Yard started out focused on Ruby on Rails but added PHP support through its acquisition of Orchestra in August. Virtually every PaaS player from AppFog to Microsoft Azure (s MSFT) is in an arms race to support as many languages as possible.