I had a conversation with Yamaha Design team just a few months ago. It seems that they are thinking more along the lines of offering an upgrade for the Tyros4 players using new middle eastern voices loaded into the RAM and new styles to go along with these sounds. I don't know what their plan for a replacement for the PSRor700. Unlike the regular line of PSRs which change about every 2 years it seems like Yamaha goes about every 8 years on their middle eastern models. First there was the PSRA3 and then the PSRA1000 and now the PSRor700 which has been out for about 3 years now.