This is what I was referring to (and jaawwnn too, I think) - Misslink88 started raising a doubt about this pre-release year, see her reply #28.
A pre-release 12-inch single of “Little Red Corvette” given to Vanity by Prince.
The album contains multiple versions of the song’s dance remix. The typed white label, with one handwritten correction, reads “Prince/ Warner Brothers/ January 14, 1982/ 45 RPM/ Stereo/ Little Red Corvette.” The white album sleeve has been decorated with marker, possibly by Prince or Vanity, and reads “Prince/ Little Red Corvette/ (dance re-mix).” (tumblr)
The same year appears on the auction website...
"A pre-release 12-inch acetate of “Little Red Corvette” given to Vanity by Prince. Side 1 contains a full version of the track running approximately 8 munutes and 30 seconds. Side 2 contains a truncated cersion of the same track that cuts off at approximately 5 minutes and 18 seconds. The typed white label, with one handwritten correction, reads “Prince/ Warner Brothers/ January 14, 1982/ 45 RPM/ Stereo/ Little Red Corvette.” The white album sleeve has been decorated with marker, possibly by Prince or Vanity, and reads “Prince/ Little Red Corvette/ (dance re-mix).” This song appears on Prince’s October 1982 release 1999 and was released as a single in February 1983.
12 1/2 by 12 1/2 inches"
http://www.julienslive.co...losed%3Dno
...And on the vinyl too (where another typo has been corrected).