For those of us doing Java EE development with Maven (which by my own account as a former consultant is pretty much all Java EE/GlassFish adopters), getting our hands on the repository location for Java EE APIs is critically important. You will be pleased to know most of the Java EE 7 APIs are available via Maven already to aid in your exploration and early evaluation efforts.
The GlassFish wiki outlines the Maven coordinates for Java EE 7, Java EE concurrency, JPA 2.1, JAX-RS 2, Servlet 3.1, EL 3.0, JMS 2, JSF 2.2, CDI 1.1, Bean Validation 1.1, JBatch, JSON-P, WebSocket and others. It should be pretty straightforward to use - give me a shout if you need help setting up Maven.