Get your dancing shoes on…according to Vintage Vinyl News, ABBA's Agnetha Faltskog says that plans are underway for some type of 40th anniversary reunion. . Faltskog says "There seem to be plans to do something to mark this anniversary in some way. But I can't say at this point what will come of them." Here's footage of ABBA performing in 1978! Wonder if they can still fit in those tight pants!