There is no reason they need to wait for a new remote - they can put those IR commands into the receiver with a software update now. Same way we get discrete commands today when the remote doesn't have them.

I thought that support could setup certain buttons to mimic the press and hold feature. In fact I thought I tried this on my 720 and some buttons did it and some didn't, but to be honest I don't remember. I just gave up using those features most of the time, which was hard being a hardcore Tivo user.