Music industry sources have begun leaking news that Apple will be holding a media event in September, according to AllThingD's Peter Kafka. Mr. Kafka reported that "several" of these sources have told him that Apple will be holding a media event the week of September 7th, the week of Labor Day.

The timing of the event is all but traditional at this point, as Apple has used a September media event to introduce a number of iPod product ramps and related product introductions for the past several years. The company has long been expected to update its iPod product line this Fall, making the timing of the event sensible.

That it is being leaked by music industry sources is merely the icing on the proverbial rumor cake.

Apple has also been expected to introduce a new tablet-based device to compete in the netbook space, but the timing of such a product announcement has been pushed back to the December quarter at the earliest by Barclay's Capital analyst Ben Reitzes, but more likely, the first half of 2010.

Our friend Jimmy D of The Loop has confirmed the 2010 timeframe for such an announcement, as well, adding that his sources have insisted a tablet device will not be shown during the September event in any way, shape, or form.

We should also note that this event will be the first held since Apple CEO Steve Jobs returned to Apple in June of this year. Even more eyes than usual are likely to be on this event to see His Steveness, should he choose to host the event himself.

Apple has not yet confirmed the event, nor has it begun sending out invitations, which usually start going out two weeks before the event itself.