from akai it seems the mpc4k and 2k WILL be different?

besides the blue color they are saying that the 4k synth sample engine will be different..and have new features in hardware as well as the mpc2k is saying the same......how odd...

So far all of it seems to be conjecture and speculation that originated on the Yahoo! forum. The members re-read the description of the MPC4000 and interpreted it to mean new hardware is coming. No one can say for sure at this time, but it is rather odd that OS 1.50 was released without good testing. It makes one wonder if the developer had a prototype blue MPC4000 and wrote the code to work with it. I must admit that, given AKAI's history and the news of the blue MPC, things look a little suspicious. Either way, we will know whenever they release the blue model.

it says it in black and white...that the mpc2000xl and 4000 have new sample engines...how odd...we will see

thats simply sales talk. "New" in the MPC 4000 compared to the sample engine in the 2000XL...
As far as i know Akai, they wouldnt built in any stuff without advertising it as the new big shyt. MPC 4000 ->XL<- that would be...

by the way:
on akaipro.com you can read

"MPC4000 KEY FEATURES
All new sampling engine with a high-performance Intel™ CP "

not

"NEW BLUE MPC4000 KEY FEATURES
All new sampling engine with a high-performance Intel™ CP "