Apple released the third developer preview of Mac OS X 10.7 Lion over the weekend.

Among the new features contained in Developer Preview 3 is Reading List, a function within Safari that lets you collect the content of webpages to be viewed at a later time.

Reading List was included within previous developer previews but was disabled - DP3 is the first to have the function enabled. Reading List is similar to the iOS app Instapaper and suggests that Apple is remaining true to its promise that Lion would see elements of OS X and iOS brought to the fore.

Other new additions to DP3 include new wallpapers, a new boot animation and new graphical elements in the Finder toolbar, according to MacStories.

It's All Tech reports new Reminders in iCal, a new next desktop button on the Dashboard, new right-clicking options, better compatibility with external displays and a Mission Control app.

Macworld Feature: Get Lion Now - Get Mission Control Now!

Mission Control brings Expose, Spaces and Dashboard together for better control over running applications.

Xcode 4.1 Developer Preview 5, a new preview version of the Mac OS X development environment, was also released over the weekend.

Apple also released a Developer Preview of Mac OS X 10.6.8 Snow Leopard, reports Apple Insider. OS X 10.6.8 will probably be the last update to Snow Leopard before Lion is launched this summer.