Many of us have already spend $100 (?) on cables / dongles that work with our current rMBP (VGA confs, network, miniDP to DP for office) and we're being asked t

Many of us have already spend $100 (?) on cables / dongles that work with our current rMBP (VGA confs, network, miniDP to DP for office) and we're being asked to throw those away and buy yet more ones!