New Flash for Dash?

[bathurst77]

(like my little rhyme?)

I think I read somewhere theres updated software the dealers can flash into your trip computer so the dash has instant fuel consumption and perhaps one or two other functions.

Anyone have any more details?
Is this for all models or only the high end dash?
Is it being done as part of std service or is by request only?
IS it free or pay?
Im about to book my zetec in for 15,000 and wondered if i shoud ask for it.