Use For CRM 2011 *Only*
This release is specifically to support CRM 2011 which is still supported, however new CRM 2011 OrgDBOrg settings will be very few and far between.
Why cut a CRM 2011 Version? Mainly due to CRM 2015, 2015 now only supports solutions exported from CRM 6.x and 7.x and I'll be moving my primary dev org up to CRM 2013 (6.x) to accommodate. For these two reasons, this CRM 2011 version will remain more static for CRM 2011 and the other main release will transition to support CRM 2013 and 2015.
What should I do when I upgrade to 2013 or 2015? Just upgrade CRM as you normally would, after the upgrade download the latest release.
-Sean