ChakraCore isn't exactly the same as Chakra for Microsoft Edge that ships with Windows 10. Microsoft highlighted two key differences in its blog post:
"First, it does not expose Chakra’s private bindings to the browser or the Universal Windows Platform, both of which constrain it to a very specific use case. Second, instead of exposing the COM based diagnostic APIs that are currently available in Chakra, ChakraCore will support a new set of modern diagnostic APIs, which will be platform agnostic and could be standardized or made interoperable across different implementations in the long run. As we make progress on these new diagnostics APIs, we plan to make them available in Chakra as well."
Microsoft is calling on the developer community to contribute to improving ChakraCore. Watch out for the code on Microsoft's GitHub page in January.
[Via Microsoft Edge Dev Blog]