Following this morning's rollout of the Voice Search for desktop, Google has also announced through the official Chrome blog that Chrome for iOS will receive the same feature "over the coming days".
Voice Search, already available through the standalone Google Search app, will be activated in Google Chrome by tapping on a microphone button above the iOS keyboard:
Over the coming days, we’re rolling out an update for iPhone and iPad as well. You can now speak your searches into the omnibox. Touch the microphone, say your search query aloud and see your results (in some cases spoken back to you), all without typing a single letter.
Interestingly, the screenshot shown by Google displays the microphone button in the same additional keyboard row that's currently occupied by buttons aimed at enabling users to more easily type URLs. Because Chrome for iOS, unlike Safari, uses a unified address bar for URLs and web searches, the extra keyboard buttons were necessary to let users quickly insert URL-related characters. It's possible that Google will figure out a way to show both keyboard rows -- the buttons and the new microphone -- by letting users swipe horizontally above the keyboard.
Alongside performance improvements, Google also notes that "iOS apps can now give you the option to open links in Chrome and then return to the app with just one tap". Assuming that Google is referring to the Chrome URL scheme with support for x-callback-url, that wouldn't be new as it is already used by a variety of iOS apps (and as I showed today, users can play with it as well). However, Google has been quite vocal about its existing support for URL schemes lately, and it wouldn't be surprising to see the company advertising the feature as new again.
Chrome for iOS, free on the App Store, was last updated in April.