Apple has announced that it will report its results for the fourth fiscal quarter of 2011 on Tuesday, October 18. As usual, the release will be followed by a conference call to discuss the financial results, which will begin at 5:00 p.m. Eastern Time. iLounge will be providing coverage of the call. Depending on the timing, it is possible the call could serve as a platform for Apple to release launch period sales numbers for new iPhone models, assuming…