SYCL 2020 revision 4 has been published

The revision 4 of the SYCL 2020 specification is now live on https://www.khronos.org/sycl/ .
This provides a lot of clarifications, improvements and bug fixes done by the SYCL committee members and the open-source community during the last 8 months.
Please, make the specification even greater by participating directly on https://github.com/KhronosGroup/SYCL-Docs