I've been looking into odin the past few days and was wondering if it had the capability of compiling everything to bytecode and running through an interpreter (like John Blow's language is able to do)? I know there was a video done by Bill 2 years ago where he was starting to write an interpreter but I don't know if he ever finished it and couldn't find anything mentioned on the odin site.
There is nothing like that currently, and there won't be compile-time execution. However, there will be a build system library, as well as a bootstrapped compiler library. It will be trivial to implement your own metaprogramming systems in the future, including compile-time execution.