If this is your profession so be it. But Canon is stupid in everything related to 200-400 in the sense that they announced it months er year(s) I mean before it will actually be available. They were not professional enough to say even approximately when it will be available
You seem to be confusing the statement that it was under development with a new product announcement. That is a big difference. It might take years to develop a product, there may be little pitfalls along the way, like the Tusanmi, which they should have predicted (very unprofessional not to have predicted that), and shut down the power consuming fluorite line and ruined many months production worth of crystals, if not more. That alone likely set back development for almost a year, since production would certainly have priority over R&D.
Once the product is announced, then start the clock to delivery. Right now, only prototypes have been seen, and for all we know, another tweak in the design is needed before its ready to announce.