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JDK Enhancement Proposals (JEP) has targeted JDK 14 release for 17 March 2020 for below features :
Pattern Matching for instanceof
Non-Volatile Mapped Byte Buffers
Helpful NullPointerExceptions
Switch Expressions (Standard)
Packaging Tool (Incubator)
NUMA-Aware Memory Allocation for G1
JFR Event Streaming
Records (Preview)
Deprecate the Solaris and SPARC Ports
Remove the Concurrent Mark Sweep (CMS) Garbage Collector
ZGC on macOS
ZGC on Windows
Deprecate the ParallelScavenge + SerialOld GC Combination
Remove the Pack200 Tools and API
Text Blocks (Second Preview)
Foreign-Memory Access API