> Which is correct, "Product A is released" or "Product A has been released"?
>
> I believe I've noticed RinkWorks using both, with the "is released" construction being used most recently (could be completely wrong about this, though.)
>
> Personally, the "is released" construction always strikes me as wrong, but I can't say precisely why. Partly I think it's because "released" is past tense, but "is" implies present tense. So "is released" seems to be mixing tenses. It also seems to make it sound like the "release" is something that is ongoing and continuous, when to my way of thinking, you release something once, and you talk about it in the past tense afterwards--thus, "has been released".
>
> Anyway, I dunno. I think about crazy things.
>
> -- Dave

I think the difference is that one is using "released" as an action which has been performed and the other is using "released" as a state in which something is. For instance, you would say "The oven is on" because "on" is the state of the oven as opposed to "off". Likewise, "Product A is released" is as opposed to "Product A is unreleased". Released, if I'm not mistaken, functions as an adjective which is being applied to the subject of the sentence. In "Product A has been released", the whole phrase "has been released" is the predicate and provides the action which is performed by "Product A". Of course, that's several years removed from having parsed sentences in any significant way.