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<h2 id="languages">New Languages and Language specific improvements</h2>
+<!-- <ul>
+ <li> -->Compared to GCC 5, the GCC 6 release series includes a much improved
+ implementation of the <a href="http://www.openacc.org/">OpenACC 2.0a
+ specification</a>. Highlights are:
+ <ul>
+ <li>In addition to single-threaded host-fallback execution, offloading is
+ supported for nvptx (Nvidia GPUs) on x86_64 and PowerPC 64-bit
+ little-endian GNU/Linux host systems. For nvptx offloading, with the
+ OpenACC parallel construct, the execution model allows for an arbitrary
+ number of gangs, up to 32 workers, and 32 vectors.</li>
+ <li>Initial support for parallelized execution of OpenACC kernels
+ constructs:
+ <ul>
+ <li>Parallelization of a kernels region is switched on
+ by <code>-fopenacc</code> combined with <code>-O2</code> or
+ higher.</li>
+ <li>Code will be offloaded onto multiple gangs, but executes with
+ just one worker, and a vector length of 1.</li>
+ <li>Directives inside a kernels region are not supported.</li>
+ <li>Loops with reductions can be parallelized.</li>
+ <li>Only kernels regions with one loop nest are parallelized.</li>
+ <li>Only the outer-most loop of a loop nest can be parallelized.</li>
+ <li>Loop nests containing sibling loops are not parallelized.</li>
+ </ul>
+ Typically, using the OpenACC parallel construct will give much better
+ performance, compared to the initial support of the OpenACC kernels
+ construct.
+ <li>The <code>device_type</code> clause is not supported.
+ The <code>bind</code> and <code>nohost</code> clauses are not
+ supported. The <code>host_data</code> directive is not supported in
+ Fortran.</li>
+ <li>Nested parallelism (cf. CUDA dynamic parallelism) is not
+ supported.</li>
+ <li>Usage of OpenACC constructs inside multithreaded contexts (such as
+ created by OpenMP, or pthread programming) is not supported.</li>
+ <li>If a call to the <code>acc_on_device</code> function has a
+ compile-time constant argument, the function call evaluates to a
+ compile-time constant value only for C and C++ but not for
+ Fortran.</li>
+ </ul>
+ See the <a href="https://gcc.gnu.org/wiki/OpenACC">OpenACC</a>
+ and <a href="https://gcc.gnu.org/wiki/Offloading">Offloading</a> wiki pages
+ for further information.
+ <!-- </li>
+</ul> -->
+
<!-- <h3 id="ada">Ada</h3> -->
<h3 id="c-family">C family</h3>