Brochure links which may help understand standard kit at that time
2014 M5 LCI -
http://www.bmw.co.uk/dam/brandBM/mar...st_July_14.pdf
2012 M5 -
http://www.bmwbrochures.co.uk/plg/m5.../792210953.pdf
LCI is BMW's terminology for 'Life Cycle Impulse' which is basically an update halfway through the lifecycle of a model. I'm guessing 'pre' would be before that.
There was a thread on here about the introduction of the LCi -
http://f10.5post.com/forums/showthread.php?t=758869