I don't understand why instead of discussing the merits or faults of the T4, we are arguing about 61 or 76 keys.

Yamaha have say NO. Why argue?

1- I am impress for the amount of SA voices (164) that the T4 is going to have.
2- The amount of styles (500)
3- The amount of megavoices (43)
4- Yamaha have the best beta testing of all the arrangers vendors. Usually the release keyboards don't have many bugs.

Is a challenge to Korg to do better.

I am no that impress with the Flash memory side. If the sequencer is no improve, who cares?
It took me 1 hour to load a piano sample in a T2 with 1 gig of memory.