Back in March, upcoming changes to the backend of Bing and its voice capabilities (aka TellMe) were revealed with the promise that those improvements were coming to all Windows Phones. Those changes included significantly faster searches, more accurate transcription and improved accuracy in noisy environments.
Microsoft has just let it out that these changes are now official. That means if you pick up your Windows Phone right now and try to transcribe a text message or do a voice Bing Search, you should noticed the improvements. As these updates come from Microsoft’s servers, there is no OS update needed.