Well, I wouldn't be surprised if it was true. As I see it at least in Russia, people mostly buy keyboards like PSR-S670 or cheaper. So what's the point of producing new items of a keyboard, which doesn't sell well?

While I respect E-A7 for being designed for professional use, as I respect musicians making this choice, personally I still find it really hard to justify choosing it over S670 which is half the price.