is a service release on the
18 track with mostly bug fixes, but is does contain a number of
new features and characteristics improvements as well.
Some highlights of the release
ssl: Add possibility to downgrade an SSL/TLS connection to
a tcp connection, and give back the socket control to a user
ssh: The following new key exchange algorithms are
'diffie-hellman-group-exchange-sha256'. This raises the
security level considerably.
kernel,stdlib,sasl: A mechanism for limiting the amount of
text that the built-in error logger events will produce has
been introduced. It is useful for limiting both the size of
log files and the CPU time used to produce them.
This mechanism is experimental in the sense that it may be
changed based on feedback. See config parameter
error_logger_format_depth in the Kernel application.
You can find the Release Notes with
more detailed info at