acid> Did you mean
1999?
Personally I think we'll either see crystal storage (it has been in dev. since late fifities afaicr) as seen on B5, or organic harddrives. The latter had come quite some way, but where having a problem reading the data back (when light affects the organic material used, how do you read it back with light?)...
As for flash, it's still (and most likely are going to stay) way to large to be practical in the long run... We're pushing the terrabyte boundary (in regular desktops), but we've not really pushed far beyond a couple of GB's which still are in a large container.
From what I recall of the crystal storage, it had the possiblity to store 500tb in a small diamond. Not the ones you find in the cheaper rings, but still small enough to fit into a ring. (Of course, how much it can store depends on the quality of the crystal...)
For the DVD, well it wasn't purely evolution either, as the spec allowed for ~18 GB of storage on one disk (dual layer dual sided) but those who created the drives and plates didn't push those.
And that was in a time that 10GB was a lot, and almost double of that on a cd sized disk was incredible...
But I agree that in the way it was introduced as single layer single sided it wasn't very good.
As for how long it will live, have anyone seen what has happened to the medias that cd's were going to make obsolete? Vinyl is still with us, and most pro DJ's prefer them due to better quality than the same album on a cd, and doesn't seem to be going away for good. It has taken a backseat, but new albums are still released on that medium?
Or what about VHS?
It too has taken a back seat, but it's still here with us. And that is after the "replacement" for the CD (the DVD) has been here for several years...
If you think about it, a lot of the technology that has been supersceded is still with us... LTP1 and PS2 connectors on the back of the computer? Floppy drives? Heck, it's not uncommon getting a com/serial port on your motherboard....!
So whereas migthy B might be correct that we'll have a replacement for DVD's in 10 years time, I have this nagging feeling it'll still be with us some time into the future...
Because we've got to remember that not everyone in the world is as eager to push the level of technology, nor as interested in upgrading as we are, which means that even after we've made the transition the old system will still be in use by most of the world...