During the Mustang Club of America dinner for the 50th Anniversary celebrations in Charlotte, NC, last night, Dave Pericak (Mustang Chief Engineer) announced in a demonstration video that the 2015 Mustang GT model will be equipped standard with electronic line lock.
This feature will be available as part of the Track Apps suite (along with launch control, accelerometers and acceleration timer).
Check the video/discussions in our forums.
Shout out to our friend chazcron (rendered back in Nov 2013)!