New version of CodeXL (version 2.4) with support of ROCm
Visual Studio 2017 version 15.3, with .NET Core 2.0

CodePlay has released ComputeCpp on Windows: it's possible to develop SYCL app in Visual Studio.

That's very interesting!
VC4CL: Bringing OpenCL To The Raspberry Pi

Other interesting news:
Khronos Group releases SYCL 1.2.1

SYCL for OpenCL™ enables code for heterogeneous processors to be written in a “single-source” style using completely standard modern C++. SYCL 1.2.1 builds on the features of C++11, with additional support for C++14 and C++17, enabling ISO C++17 Parallel STL programs to be accelerated on OpenCL devices

Kronos Group released Spir-V 1.3 (with new version of Vulkan).
CodeXL 2.5
PoCL 1.1 now supports LLVM 5 and 6 and starts to support (experimental) Spir-v.
Codeplay introduced OpenCl support to TensowFlow
LPGPU2 project expands CodeXL for SYCL profiling

PyOpenCL is at 2018.1 version
Intel moves NEO to OpenCl 2.1
New version of Rocm 1.7.2
SPIR-V to LLVM bi-directional translator

Kronos Group released OpenCl 2.2 Maintenance Update

Other interesting news:
Khronos Group releases SYCL 1.2.1

And Codeplay releases new version of ComputeCpp to be compliant with new SYCL

ROCm is now at 1.8.1 version, with full support to Tensor.
HIP is at 1.5 version, with a lot of new features.

New LLVM 7 now support OpenCl C++
New Intel guide for OpenCl on Visual Studio
LPGPU2 Consortium released new tool suite for gpu developers, with full SYCL support
IWOCL 2018 conference with a lot of interesting talks and documents

New version of OpenCl toolbox for Mathlab
IBM Node-Red now fully support OpenCl
FusionCL.net, a C# wrapper for OpenCl (with support for Visual Studio).
CodeXL 2.6
Spir-V Tools version 2018.6 with first commit of reduce (like C-Reduce)

Rocm 2.0 is here, with support to OpenCl 2.0, Tensorflow, Kubernetes and more.
Radeon Gpu Profile now supports OpenCl profiles.
Interesting little guide from Intel to Heterogeneous Computing via OpenCl

Kronos Group releases OpenCl 2.2-10

Intel opens his SYCL implementation for LLVM
Intel presents his OpenCl compiler stack for cpu
Kronos Group is working for SPIR-V support with LLVM, OpenCl and Vulkan
Kronos Group creates a OpenCL Tooling Subgroup to work on tools for OpenCl

PyOpenCl 2018.2.5 version
PoCl 1.3 version with LLVM/Clang 7 and 8 support
Rocm 2.2 with DGEMM optimization and Caffe2 multi-gpu support
OpenCl in C# via Cloo

Rocm 2.4 with full support to Tensorflow 2.0 next release
Intel released OpenCl Linux 19.17 stack
Iwocl 2019 Conference

And Codeplay releases new version of ComputeCpp to be compliant with new SYCL

ComputeCpp now has a open and free version, Community Edition
Rocm 2.6 is out, whit a lot of new features

Kronos Group released OpenCl 2.2 Maintenance Update

Kronos released latest OpenCl 2.2 Reference Pages
Xilinx release OpenCl reference in SDAccel
Cuda and Sycl comparison
HipSycl continues to grow

Kronos releases OpenCl 2.2-11
PyOpenCl 2019.1
On-line course/test (completely in browser) on Sycl

LLVM/CLANG 9 experimental support of C++ for OpenCl
Intel releases SYCL Compiler and Runtimes 2019-09
HIPCL from Cuda to OpenCl
Kronos introduces support to OpenCl 2.2 to CLHPP