Hey you don't beleve me!?!?
Here are some more details I found out using the website-translator "e-lingo":

The PLG100-SG is a vocal-synthesizer which is able to generate the human voice; here are some features:
-72 preset voices
-monotimbral : /
-compatible to every Plug-in compatible device (SW1000XG, MU128, CS6x, ...)

Here some more details about the EOS B2000:
-available in several colours (white, grey,...)
-1035 voices, 32 drum sets
-XG-compatible (586 voices, 20 drumsets)
-high-quality speaker system, equalizer
-phrase sampling
-QY700-sequencer built-in, Arpeggiator
-34 parts
-6 effect blocks
->you can say a CS6x with a sequencer (?)

Another NEW DEVICE is the QY100!! The new pocket-sequencer of Yamaha whith the following features:
-smart media slot
-memory for 32,000 notes (less than 20 songs)
-sequencer can handle 64 notes simultaneously
-record modes(sequence and pattern): real time, step recording
-tracks: 16 in song mode, 8 in pattern mode
-polyphony of the XG-device: 32 notes (that's quite less, eh?)
-number of sounds: 547 + 22 drumkits
-multitimbrality: 24 parts (well...but 32 notes polyphony...could that work!?)
-effect blocks: 3 (Reverb, Chorus, Variation)+ 1 Guitar Amp Simulator)
-input for foot switch controller, mic/vocal input, Midi IN/OUT, TO-HOST, DC-IN

Soundpool
*now waiting*

; )