Put aside the specific item and it's future changes plus the impacts on resale. How many of us would not buy a 6 sp auto for fear next yr.'s 8 sp would impact resale. Or today's built in nav. system because a newer one will probably be available in a year or two? While tow vehicles will probably be last, we are right on the cusp of major changes in accident avoidance, auto parking and self steering. Should we wait? When it comes to these improvements or improvements in diesel emissions systems, you can be sure none will be free. So, the opposite 'fear' would be, yes a much better vehicle in the future, but it is out of my budget. Worry is like sitting in a rocking chair, it keeps you busy but doesn't get you any where.