OnePlus has started seeding a new update for the OnePlus One smartphones as promised by the co-founder, Carl Pei. The new Cyanogen OS 12 update is being made available to all supporting countries. The new Cyanogen OS 12 update with build number YNG1TAS17L and weighing about 584MB is being seeded to the One devices. This update packs the long promised OK OnePlus' voice activation feature which works even when the phone is in sleep mode. However, the update only mentions power improvements and security enhancements for the device. The One phone still remains on Cyanogen OS 12 based on the Android 5.0.2...
Source: http://www.gsmarena.com/oneplus_one_getting_a_new_update_packing_ok_oneplus_feature-news-12008.php