As you probably know by now, we’re constantly upgrading the content of the courses and adding new material to the exising curriculum.
These are just the new lessons, I'll let you know about the new courses soon. 

Here are just a few of these, published recently: 

In Learn Java Basics:
  • Date and Time
  • Enums
  • Basics of Working with Files

In Learn Java Logging:
  • Logback configuration

In Learn What's New In Java:
  • Stream API Additions
  • Sealed Classes
  • Other Key Additions
  • Switch Expressions
  • Compact Source Files and Instance Main Methods

Learn Java Streams:
  • Parallel Streams

Learn JSON with Jackson:
  • Custom Serialization and Deserialization
Of course, each course has a Changelog - which is more complete, to see exactly what new material you have access to. 

Hope this quick heads-up helps.
Cheers,
Eugen

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P.S. Also making solid project through the Roadmap :)