From Tiger GPS
"NOTE: The Garmin eTrex Vista C has been discontinued. It is replaced by the eTrex Vista Cx (click here), with expandable memory. You can also check out our Handheld GPS Units page for more options."
As well as the same message for the Legend C.
And from GPSNow
"GARMIN has discontinued this unit. Consider the newer Vista Cx that ships with more memory and has the ability to accept even larger microSD memory cards."
However, there is nothing on either web site about the 60C series being discontinued.