While demonstrating iOS 7 at the Worldwide Developers Conference, Apple announced some new Siri features. Among them, integration of Bing web search results.

Siri has a new interface, and even a new male voice. It now understands more types of commands, such as:

• “Play last voicemail”
• “Increase brightness”
• “What is John Appleseed saying?”
• “Tell me about surfing”
• “What are the best beaches for surfing?”

In addition to the Bing web search results, it now has Wikipedia integration, which should make it significantly more Knowledge Graph-like. Google’s Knowledge Graph, as you may know draws from Wikipedia a great deal. The new features should reduce the gap between the two offerings.

You can also search Twitter with Siri now.

Update: Here’s what Apple says about Siri in the iOS 7 press release:

Siri sounds better than ever with new male and female voices and includes Twitter search integration, so you can ask Siri what people are saying on Twitter*. Siri also now has Wikipedia integration, providing access to the world’s most popular Internet reference site. Siri offers Bing web search within the app and the ability to change device settings and play back voicemail.