You don't need to guess, the announcement says they can play...

You don't need to guess, the announcement says they can play music and speech. The problem is likely that the speaker is either not loud enough or has too much distortion (or a combination of the two) in it's current form, hence the need for further refinement.

We have a reasonable idea as to what levels they're targeting with respect to volume levels and distortion levels based on prior announcements. Agree it would be good to see how close they are to those, but my guess is the majority of the market would freak out hence their decision not to release them.