It's similar to VHDL in that Synposys came out with Design Compiler in the 80s, and people switched from drawing schematics to writing code to design electronics.

From a language perspective it's quite different. VHDL has super-limited semantics to make it easier to synthesize. JITX is embedded in a general purpose programming language, which makes it more productive to write, and capable of describing all the weird little details that need to be handled for board design.