This is my first visit to this forum. I have what I hope isn't to lame of a question, but here goes. My local cable provider sells an HDTV tuner that provides 1080i - 720p via HDMI or component video outputs. What I'm wondering is when and if 1080p is made available from a source other than blue ray DVD for example will the coaxial cable coming into my home support that and if so, would I then have to upgrade my HDTV tuner? Thanks.