Hardware
Double Wave Memory 512Mb ROM
Faster processor - So it's faster in navigating and tighter in sound
Flash memory - instead of the DIMMs
VH2 - new vocal harmony technology and Synth Vocoder
XLR Mic input

Software
Slightly changed Organ Flutes GUI with the inclusion of a Euro type
Drum Mixer - make and balance your own Drum Kits
Wave Cycling - For vocals
New Vocal Harmony Interface
'Ambient' Sampling
Improved SA2 voicing technology with additional layer.
SA2 Voices in Styles

Content
Better Pianos - Using CLP technology including Key off and Damper samples.
new Strings - 70 piece Seattle Symphony Orchestra Mega.
new Orchestral Brass - highly dynamic
new Tuned Percussion - Glock, Xylo, Marimba and Vibes (with motor on)
new Mega guitars - telecaster with Finger and Plectrum
new Drums - Real Brushes and Real Drums plus 4 Dance Kits
SA2 Celtic Violin
SA2 Jazz Violin
SA2 Ballad Soprano Sax
SA2 Pop Soprano Sax
new Organs - Vox continental and Wersi Helios included
new Synth Voices - from Motif XF
new Classical Choir - Men and Boys Choirs. Very expressive with the ambience of the Cathedral
new Gospel Choir - Various articulations and Ad libs
new Pop Vocals - 4 session singers, 2 male and 2 female.
Singing many dynamics and many articulations. Wave cycling enables this to work

500 styles, many completely new.
All styles upgraded with new voices including SA2 voices.

plus more...

the sound is the biggest upgrade we have ever offered.

This sounds very interesting.
“new Pop Vocals - 4 session singers, 2 male and 2 female.
Singing many dynamics and many articulations. Wave cycling enables this to work”

We will just have to wait to hear how that sounds.

That all sounds nice, but they haven't addressed another big issue and that is how do you dynamically change the "Ooom Pah Pah" effect of the styles ala the Riff function of the Audya or the other style tools found in Roland?

One of my biggest issues with Yamaha is they do not have Outstanding core styles in each Genre that aren't complete musical productions. How about a simple bass, drum, guitar killer Mustang Sally style?? Meaning basic 4/4, 2/4, 6/8 killer styles that are NOT overprocessed with orchestras and at least 4 accompanying instruments. I think Ketron does this really well and I would have thought the T4 would have taken the Audya head on in this category.

On the other hand, adding the Motif XF sounds, drums, and Flash Ram capability and the Vocal harmony is very exciting. The entire keyboard must sound killer.

Any word on pricing??

Tyros 4 will be the biggest selling arranger worldwide...Audya who?

I'm a little bit annoyed as I've only just got my T3 really. I've asked if the supplier I got it from can do a deal but I've not had a reply yet.

get ready to sell it outright

I see you got your crystal ball

Why not, everyone else does?
September 17th the arranger world as we know it will change forever with Tyros4..

I cann't wait for Korg's new arranger.