I have never paid attention to a Mac launch timeline before (only the phones) so i'm not exactly sure how the timeline for this launch will run. Can someone please inform me how the Mac product launch timelines typically look like based off previous year launches? For example, based on the past years, after the announcement of the new Macs, how long does it typically take before you can pre-order and buy on both Apple's website and sites like Best Buy? Also, how long does it typically take before stock is readily available to walk-ins? I own a 2011 MBP, but would like to try and sell it before the new ones are launched so the value doesn't drop too much, and am trying to determine how long i might be without a computer if i sell my current one before the launch. Any advice or suggestions are very appreciated! Thank you in advance!