Probably not even that. Until early last year, sigma released APS-C lenses for the L-Mount, but they have stopped doing so with the 12 mm f1.4 and it seems like they also will not release the 15 mm f1.4 for L-Mount. Maybe they gave up on APS-C lenses for L-Mount and that also indicates they are not planning an APS-C camera in the foreseeable future.
Chinesen companies, like TTartisans or 7Artisans did only release Full frame lenses for L-Mount. If we assume, that Chinese companies in the same branches knows about what doing the others, then we could assume they aren't planning APS-C cameras for L-Mount neither.