- The Undefined Behavior Sanitizer has been ported to GCC.
- ADA and Fortran have seen upgrades.
- Improved C++14 support.
- - RX100, RX200, and RX600 processor support by GCC.
- Intel Silvermont hardware support.
"Card readers? We don't need no stinking card readers." -- Peter da Silva (at the National Academy of Sciencies, 1965, in a particularly vivid fantasy)