/mapinfo doesn't show one, neither does the popup shown when you join a server. Tested on USA and GER.
I guess "stamp" == 0 in the following code?
src/game/server/score/sql_score.cpp
char pReleasedString[60] = "\0";
if(stamp != 0)
{
sqlstr::AgoTimeToString(ago, pAgoString);
str_format(pReleasedString, sizeof(pReleasedString), ", released %s ago", pAgoString);
}