we are happy to announce the 11th official release of RIOT:
----------------------- * RIOT 2017.04 * -----------------------
This release provides a lot of new features, fixes and enhancements. Among these has been a huge cleanup regarding cppcheck and documentation, and we're pleased to announce that all remaining doxygen and cppcheck warnings have been fixed. We're also proud to present a Virtual File System layer and integration of the SPIFFS file system. A lot of work has gone into support for STMicroelectronics's Nucleo family, with RIOT now supporting 28 (up from 13) Nucleo boards. And as always, there was a lot of under-the-hood cleanup, bug fixing and documentation work.
About 200 pull requests with about 562 commits have been merged since the last release and about 23 issues have been solved. 32 people contributed with code in 91 days. 2697 files have been touched with 716950 insertions and 492623 deletions.
You can download the RIOT release from Github by cloning the repository  or by downloading the tarball , and look up the release notes for further details .
Thanks everyone for your contributions, discussions, testing efforts, and keep RIOTing!
Happy hacking, Kaspar
 https://github.com/RIOT-OS/RIOT/releases/tag/2017.04  https://github.com/RIOT-OS/RIOT/archive/2017.04.tar.gz  https://github.com/RIOT-OS/RIOT/blob/2017.04-branch/release-notes.txt