Not necessarily true they might pull the same trick Phillips is pulling and just use one of their curved tv panels (not necessarily ones that already exist), since doing this is not only cheaper for them, but also cheaper for their buyers. Considering how well this monitor is selling it might be a strong possibility.
I believe curved 34 inchers are also selling briskly, my concern is that they want to sell those first without giving people choice, before engaging into 40" curved. That can mean one year of waiting.