So here's my crystal ball gazing for the future. I believe, that in about two years time, we will not recognize GPS' as they are now. Why?
Apple's new 3G iPhone will be introduced this summer, with two 8-gigabyte-memory and 16-gigabyte-memory models. The new iPhone will also have a GPS chip for navigation and "other location-based services."
Now, what does "other location-based services" mean? Perhaps this is a feature that may be in competition with the SPOT satellite messenger? (But perhaps not waterproof;)
I don't know, but I for one will be hoping my already out-of-date and discontinued Garmin GPSMAP 60CS will hang on for another couple of years.