Android O will monitor your phone's "Vitals," such as speed, performance and battery life. You can read all about changes to Android O here.

The five most important takeaways.

In addition Google is releasing Android Go, a slimmed-down, less-demanding version of the operating system, to power devices in emerging markets.

Twice-as-fast boot time...

Google Assistant is now available on iOS, and Google released a developer's kit to bring it to a whole bunch of other devices.

The Google Home, its smart speaker for Google Assistant, gets tons of new features.

The Google Home, its smart speaker for Google Assistant, gets tons of new features.

Visual Responses will send information to a relevant device for display, such as directions to your phone or a calendar to your Chromecast for display on your TV.

The Google Home will also sport Spotify integration (as well as SoundCloud and Deezer) and Bluetooth support. It can launch HBO Now as well.

The Google Home can speak a lot of different tech dialects.

It's also a way to let you interact with streaming services without having to talk to your TV.

The Google Home now will have "proactive assistance," otherwise known as push notifications, hands-free free calling (outgoing only, to start), Spotify integration (as well as SoundCloud and Deezer) and Bluetooth support. It can launch HBO Now as well.

Combining use of GPS and the intelligent learning of Google Lens enables you to get quick information like restaurant reviews just by pointing your phone's camera at the options you see nearby on the street.

Wanna know what flower you're looking at without fumbling with some sort of identification app? Just point your camera and ask. Google will tell you.

Here the presenter demonstrated securing concert tickets and marking his calendar, all through the voice assistant.

Google Photos got some major attention too. With machine learning and facial recognition working to classify all the photos you take, they aim to increase the likelihood of sharing the photos you take with those who might be in them.

You can even share a photo feed with your spouse or family, synchronizing all, some, or just new photos taken on your phone with certain people in them. This streamlines sharing, but could be irritating if you don't particularly want to see every food or cat photo your spouse takes.

Google pulled up all the photos it recognized as containing the people in question, and then decided which ones would be best in the book. It even did a layout for him.

Google is launching a photo book service, too. Tell Google what you want the subject of your book to be. In this case, the presenter used a Mother's Day book of photos of his wife and children as an example.

To read about all of today's Google announcements, check out CNET's coverage of Google I/O 2017.

The company announced several new efforts. Google.ai is a spinoff division to encompass learning systems, research tools and applied AI to inform all of its work.

This new chip, delivering an impressive 180 teraflops of computing power, both runs and trains machine-learning.

This slide visualizes the training of machine learning to recognize the difference between a cat and a dog in photographs it encounters.

Google Lens is a new recognition engine that enables intelligent mixed reality -- performing text and object recognition and feeding it into other apps to act upon, such as using the camera to view your router serial numbers and automatically provide related links.

As you can imagine, the more photos are fed into Google, the better the AI gets over time at recognizing various subjects.

Same thing with speech recognition. The more we use Google Assistant, the better it gets at distinguishing our individual voices and deciphering our speech, even in noisy environments.

Google wants to push you to share more, adding Suggested Sharing to Google Photos to remind you to share and recommend who to share with, plus a feed of shared images.

Following its Daydream View phone-based headset from 2016, which has garnered new phone partners, Google announced an unnamed Daydream-compatible headset.

It doesn't require a phone or computer, but will be a standalone wireless VR headset with built-in positional tracking. We'll see devices later this year.

It also mentioned its visual positioning service, which uses Project Tango technology to locate yourself indoors to a finer degree than GPS.

Read all about the standalone headsets due from HTC and Lenovo here on CNET.

He didn't say how much these headsets will cost, nor what they'll be called. But they will be available by the end of the 2017.