I do know the 2 new sub amps are:
DA-1802DSP: 900W x 2CH 4 ohm, 1800W x 1CH
DA-2602DSP: 1300W x 2CH 4 ohm, 2600W x 1CH
The 1212N-SF/R (SF series sub) is similar in price to the previous SV-1212NR sub. So I would guess that the SF series speakers may be similar in price to the SV-6500 and SV-61. But just speculation for now.
I don't think the previous model on-wall, in-wall, in-ceiling speakers have changed. New models like the 821W/R and 821CW/R will be available, but you already know this.