Apple released a second public beta for macOS 10.12 Sierra on Wednesday. The company launched the first public beta earlier this month and released its third developer build on Monday.

macOS Sierra packs in a ton of exciting new capabilities, including the long-awaited Siri for Mac. It also introduces new Continuity features such as a Universal Clipboard that lets you copy on one device and then quickly paste on a second synced Apple product. You can even skip the password login screen if you have an Apple Watch, thanks to Auto Unlock.

The update also brings object recognition and search to the Mac Photos app, along with a new feature called Memories that can create slideshows and montages using your pictures. It offers new Optimized Storage capabilities for saving space on your computer’s hard drive, and Apple Pay support when you’re shopping in the Safari browser.

Apple’s public macOS Sierra beta is available for anyone to try. If you’ve already registered with the beta testing program, you can grab it now in the Mac App Store, or hit the source link below to sign up now.