That will be translated into a few sequential reads by the os & NCQ. No non-raid device gets any kind of speed boosts from concurrent reads -- ssd's just don't suffer as much from them.
Sure, but if you're making a TV show or the like, it's not unusual to be compositing multiple video streams. TV companies have massively expensive hardware for this of course, but this will be a real boon for anyone who makes a living with multimedia.
Professional video editing has developed workarounds for that problem as far back as the 80's. Basically they do the editing on a low-res version of the footage (it's called an "offline edit"), then export it as an "Edit Decision List (EDL)" and then the big computers crunch on it overnight using the original, hi-res footage and produce an "online" edit. Companies like Avid sell specialized servers that have an in-built LCD screen on their case so that you can see the programme as it is being processed.
Online editing is still quite CPU intensive so I don't think that SSDs alone will change that workflow but it might still help somewhat at offline editing.
Quite so, but if you're greenscreening or color correcting in, say, After effects it's nice to be able to work at full res whenever you can. Right now I use RAM preview to get a quick idea of how something looks, but I can see an SSD obviating a lot of the usual disk-bashing for longer previews. For final render, as you say CPU becomes the dominant factor.
