Physical levels will be removed.
Jobs are specializations. Not something brand new. What's confusing? IE: become specialized at nuking/healing, DD/tank, or whatever else.
Time frame depends on how quickly testing can be done, and it will be released in pieces that -are- done, like all patches.
It's as clear as it can be without inspiring false hope. Don't just read between lines. Read -the- lines.
(I don't mean to come across as rude, just that there's too much overthinking)