2012-02-06, 00:35
I just checked and it's currently not possible in XBMC to sort tvshows by Date added so JSONRPC can't support it either. But I'm actually working on adding better/real support for sorting by "Date added" because I hate it wen a movie (that has probably been in my library for a year or two) I just manually refreshed re-appears in the recently added list.