Hi New Yorker, I answered this morning on another thread, but I can't see it anymore so here it is again:
01 has been around for a while and had about 200 new sounds in every category including drum kits. There was good brass stuff with mutes, cups, 40s, sforzando etc and various fixed tempo vocal patterns at various tempos, but extras of every kind of voice across the board.
02 was more specialised called 'movie production' and had about 180 sounds with celtic folk instruments and many strings, stereo orch sections, spiccato, trill major and minor, marcato, etc etc movie score is a good idea of the stuff.
I've had both of these in my 65, both are extra 16 MB wave rom and can be put in the new 7k.
03 should be released at the same time as the 7k and is called vintage keyboard, and apparently has different samples from examples of all the classic organs, pianos and particularly classic synths.
04 only has a provisional title called 'super sounds' (tells you a lot!) and should be out before Xmas.
If the last 2 are the same as the first 2 they should add up to a total of 64 MB wave rom extra.