There has been a partial teardown by ANANDTECH results on their web site --- but not a full teardown by IFIXIT or CHIPWORKS yet.
Expect to see in the IFIXIT teardown details about the Cirrus Logic audio sensor - in support of the 3i mics for voice interface.
Motorola X8 system within the new Motorola Moto X ...and the new Droid Mini , Droid Maxx and Droid Ultra that are available on Aug 20th
The Motorola X8 system has :
One local natural language processor (L‐NLP). Motorola proprietary low‐power specialized processor with audio sensors, noise estimators, noise cancellation, and speech recognition technology to enable always-on voice based user interaction without sacrificing battery life.
Cirrus Logic Ultra-Low Power, 4-Channel Microphone A/D Converter Enhances Performance for Voice ApplicationsIn Volume Production Today, CS53L30 Features Four Analog or Digital Mic Inputs For High-Precision Voice Processing