10 years would be nice, but previous to my new 1080p Samsung I was always upgrading every 5 years or so as resolutions increased. Now that we're at 1080p, I wonder if it will go higher yet.
1440P is on the horizon .... I've already seen it at our industry conventions (Cedia). A few issues they need to work out first (like HDMI can't handle it yet) before it arrives on the consumer market.
They were shooting for a mid 2011 release of the resolution standard.