It's true that we don't know much about the upcoming Dragon Age . But that isn't because BioWare is "afraid" to let the details loose. They're just waiting for the right time.
BioWare representative Blair Brown has responded to fan criticism concerning the lack of info for Dragon Age III: Inquisition . They wanted to make it clear that EA doesn't dictate when the developer releases details for their games:
"We decide when we are ready to reveal information (not EA), which is not yet, we are waiting for the perfect moment to blow everyone away. We are not 'afraid'."
All we really know is that Inquisition will be using the new Frostbite 3 engine, which will also be on display in Battlefield 4 and the new Mass Effect entry. Personally, being more a fan of fantasy than sci-fi, I'm far more interested in Dragon Age III , and I hope BioWare has taken fan feedback into account. For instance, I'd like to be able to fully equip all my party members, thank you. Oh, and much bigger areas to explore.
Related Game(s): Dragon Age III: Inquisition