just off the chat with Apple Support, they claim (through remote diagnostic support) that the device is fine including the barometer...but the Apps that use it basically indicate that there is not barometer installed. (see chat below)
So the results show that your devise works just fine. Including the barometer. However, apparently Apple has received reports of the symptom you describe and is currently investigating this issue. Keep your software up-to-date using Software Update and I am confident the problem is solved soon.