I'm waiting for the first system that is equivalent of C++.
Not gonna happen anytime soon. C++ is much more than just a programming language, it is an entire "ecosystem". You have toolchains, libraries, drivers, APIs, existing software stacks, all written in C++ and able to interface with C/C++ directly, i.e. no translation layer needed. You're not just gonna replace that with a new language.
Sure, Halide may be seen as just some syntactic sugar (much like quite a few bits and pieces of C++11), but it actually provides you with a different level of abstraction than say OpenCl, MPI or OpenMP where you are very specific about e.g. level of concurrency (which heavily impacts the design of your algorithm) while Halide tries to almost completely separate algorithm and scheduling.
I maybe wrote it badly. Skrebbel said it a lot better. It's about providing something that's on truly higher level.
It's nice that Halide attempts to separate the algorithm and scheduling, however as of now it's also possible in OpenCL too. The implementations are just so bad at it that it's not really useful.
Sure, Halide may be seen as just some syntactic sugar (much like quite a few bits and pieces of C++11), but it actually provides you with a different level of abstraction than say OpenCl, MPI or OpenMP where you are very specific about e.g. level of concurrency (which heavily impacts the design of your algorithm) while Halide tries to almost completely separate algorithm and scheduling.