Liberty now supports Java 8, plus a bunch of features that were previously in recent betas. Including OSGi Application Integration 1.0, SPNEGO 1.0, JDBC 4.1, WebSocket 1.1, Expression Language 3.0, and JSP 2.3.
In the February 2015 Liberty beta, Java EE 7 updates include CDI 1.2, JSP 2.3 and EL 3.0, application client 1.0, JASPIC 1.1, JACC 1.5, and EJB 3.2. Plus operations, WebSphere Developer Tools, and Admin Center updates.
With the latest release of the Liberty profile you can now write and deploy production applications that make use of Java Servlet 3.1, Java API for WebSocket 1.0, Concurrency Utilities for Java EE 1.0 and JSON-Processing 1.0. In addition to these Java EE 7 programming models OpenID 2.0, OpenID Connect 2.0 support more web based single sign on for applications and the dynamic routing and auto scaling features allow large deployments to respond dynamically based on workload changes.