I did a search and I found four threads just like this one, in fact, two of them have this same exact title! The built in search feature isn't the best, but the Google one sure is.
As far as availability, I doubt within the next two years. Reason being, it costs way too much. If you want to pay 800.00 for an iPod, I'll be they will have it, but if you are like most people, you would never pay THAT much for an MP3 player, just so you can have it all at once...
The prices on flash are really really expensive right now, that is why they aren't using them. I give it one year to get to the market and two years to get into the ipods. 32 gigs on flash is done, but it is still somewhat in a prototype state, if you will.. and it has not fully gotten onto the market yet... why... price!