The Java EE 8 specification (JSR 366) Released 18 Sep, 2017.

The Java EE 8 specification (JSR 366) was released 18 Sep 2017.

https://jcp.org/en/jsr/detail?id=366

"What's New in Java EE 8

Java EE 8 continues to improve API and programming models needed for today's applications and adds features requested by our world-wide community. This release modernizes support for many industry standards and continues simplification of enterprise ready APIs. Enhancements include:

• Java Servlet 4.0 API with HTTP/2 support
• Enhanced JSON support including a new JSON binding API
• A new REST Reactive Client API
• Asynchronous CDI Events
• A new portable Security API
• Server-Sent Events support (Client & Server-side)
• Support for Java SE 8 new capabilities (e.g. Date & Time API, Streams API, annotations enhancements)"

Java EE 8 builds on Java EE 7. The following JSRs are new or updated in Java EE 8:

• JSR 366 – Java EE 8 Platform
• JSR 365 – Contexts and Dependency Injection (CDI) 2.0
• JSR 367 – The Java API for JSON Binding (JSON-B) 1.0
• JSR 369 – Java Servlet 4.0
• JSR 370 – Java API for RESTful Web Services (JAX-RS) 2.1
• JSR 372 – JavaServer Faces (JSF) 2.3
• JSR 374 – Java API for JSON Processing (JSON-P)1.1
• JSR 375 – Java EE Security API 1.0
• JSR 380 – Bean Validation 2.0
• JSR 250 – Common Annotations 1.3
• JSR 338 – Java Persistence 2.2
• JSR 356 – Java API for WebSocket 1.1
• JSR 919 – JavaMail 1.6"

http://www.oracle.com/technetwork/java/javaee/overview/index.html

The Java EE 8 Tutorial
https://javaee.github.io/tutorial/

And the source code is now published on github
https://github.com/javaee/tutorial-examples

GlassFish 5.0 was released 21 Oct 2017 and is the reference implementation for Java EE 8
https://en.wikipedia.org/wiki/GlassFish