heatseeker

( n.)

   [IBM]  A  customer  who  can be relied upon to buy, without fail, the
   latest version of an existing product (not quite the same as a member
   of  the {lunatic fringe}). A 1993 example of a heatseeker was someone
   who, owning a 286 PC and Windows 3.0, went out and bought Windows 3.1
   (which  offers  no worthwhile benefits unless you have a 386). If all
   customers  were  heatseekers,  vast amounts of money could be made by
   just  fixing  some  of the bugs in each release (n) and selling it to
   them  as release (n+1). Microsoft in fact seems to have mastered this
   technique.

[glossary]
[Reference(s) to this entry by made by: {lunatic fringe}]