As far as I know we have no plan to provide Elektron SDK C++ libraries build with Visual Studio 2017.
However according to the following blog on MSDN
I think you should be able to use Elektron SDK C++ libraries for VS2015 with VS2017. This is because VC Runtime in MSVC 2017 is binary compatible with 2015. Loading your C++ projects targeting an older C++ toolset inside Visual Studio 2017 does not change your project. Thus if you have a library built with the v140 platform toolset, that binary and your code consuming it will continue to work even if you built your code with the v141 MSVC toolset.