R15B is a major new release
R15B Readme File
R15B Source File
R15B Binary File
R15B Html Documentation File
R15B Man Pages File
Line number and filename information are now included in exception backtraces. This information will be pretty-printed in the shell and used in crash reports etc. In practice it will be much easier to find where something failed.
The driver interface has been changed to enable 64-bit aware drivers. Most importantly the return types for ErlDrvEntry callbacks 'call' and 'control' has been changed which require drivers to be changed.
New in this release is the support for 64 bit Windows. The self extracting installer can be found here.
CommonTest hooks are now in a final supported version.
There is a new GUI tool in the observer application which integrates pman, etop, appmon and tv into one tool. The tool does also contain functions for activating tracing in an easy way.
The Erlang distribution can now be run over the new SSL implementation.
Compiling Erlang from source
You can build Erlang from source on your own, following the building and installation instructions. Or use the Kerl script. Kerl is a script that lets you easily build Erlang with a few commands. Follow the instructions to build.
Pre-built Binary Packages
Most OS package managers provide pre-built binary packages. You can also download the latest stable releases from Erlang Solutions. Erlang Solutions provides pre-built binary packages for OS X, Windows, Ubuntu, Debian, Fedora, CentOS, Raspbian and other operating systems.
Since OTP 18.0, Erlang/OTP is released under Apache License 2.0. The older releases prior to 18.0 were released under Erlang Public License (EPL), a derivative work of the Mozilla Public License (MPL). An English translation of EPL can be found here.