More evidence pointing to the possibility of a voice control feature in iPhone OS 3.0 has been found in the latest beta version of the software. Citing anonymous sources, Ars Technica reports that a number of references to classes and methods related to the code name “Jibbler” have been discovered in the software, which appear to suggest support for both voice synthesis and voice recognition. References to Jibbler, which appears to be an enhancement to the iPhone’s home page SpringBoard application, include VSSpeechSynthesizer, VSRecognitionSession, SBVoiceControlDisableHandlerActions, SBSensitiveJibblerEnabled, and SBVoiceControlSoundCompletion. Ars adds that SB refers to SpringBoard, and VS likely refers to voice services; the report also suggests that the feature may be activated by the in-line button on the headset, and could be used for voice-controlled dialing, along with iPod nano 4G and iPod shuffle 3G-style audio feedback. Prior screenshots of the upcoming OS update showed a Voice Control menu option in the Settings app.