Yamaha applies its sound projection technology known from the YSP series home theater speakers to conference phones.

The Yamaha PJP-100CH and PJP-100UH (USB) utilize 12 small speakers to direct sound directly onto the listeners in the room. 32 microphones (16 on each side) provide for the sound input. The phone picks up automatically which microphones are close to the speaker. Echo cancellation of the Yamaha sound projection phone provides for clear bidirectional conversations.
The Yamaha PJP-100CH will sell for 294,000 yen (~$2,465) starting April 1st.
The PJP-100UH will sell fro 252,000 yen (~$2,127) starting May 1st.
More details in this Yamaha press-release (Japanese).