According to Mark Reinhold (Chief Architect of the Java Platform Group at Oracle),
Java SE 7 — Mid 2011
§ JSR 292: Support for Dynamically-Typed Languages (“InvokeDynamic”)
§ JSR TBD: Small Language Enhancements (Project Coin)
§ Upgrade Class-Loader Architecture
§ Method to Close a URLClassLoader
§ Concurrency and Collections Updates (including the Fork/Join Framework)
§ Unicode 6.0
§ Locale Enhancements (IETF BCP 47 & UTR 35)
§ JSR 203: More New I/O APIs (“NIO 2”)
§ TLS 1.2
§ Elliptic-Curve Cryptography (ECC)
§ JDBC 4.1
§ Translucent & Shaped Windows
§ Heavyweight/Lightweight Component Mixing
§ Swing: Nimbus Look-and-Feel
§ Swing: JLayer Component
§ Update the XML Stack (JAXP, JAXB, & JAX-WS)
Java SE 8 — Late 2012