As long as they keep backwards compatibility, like they did with DVD's when they introduced blu-ray... One of the issues people had switching to DVD (which was why that was one of the hardest medium introductions to pull off) was that you couldn't play your VHS tapes on (most) DVD players (and the dual ones that could broke a lot). With blu ray players, first they are decently inexpensive.. and secondly you can play DVDs on them still, so you don't HAVE to switch the medium... A new player will allow you to cross collect.