I think this signals that a huge group of computers are about eliminated from 10.12 update this summer. I think it also means a bigger change than normal with the software this year as well. The last time they went this long with supplemental updates was 10.6 and when Lion came out we saw a major departure from from they typical OS X look and feature set. Since 10.8-10.11 has been supported on macs that are now almost 10 years old now I'd expect that nothing older than 2010-2011 will be supported on the new update. They are trying to make 10.11 as stable as possible for the millions that will be left behind. Guess it's time for me to invest in a new Mac...