Two weeks after the release of Mavericks Developer Preview 3, Apple has released the fourth Developer Preview of OS X Mavericks to developers. Developers can get the update via the Software Update tool in the Mac App Store. OS X Mavericks will be release this fall and with new features such as a tabbed Finder, full screen dual monitor capabilities, Safari improvements, and a new Maps app.

Exactly two weeks after releasing the second beta of iOS 7 to developers, Apple has just released beta 3. The new beta arrives as build 11A4414e and is available via the over-the-air update to existing beta testers and through the iOS Dev Center. » Apple Seeds iOS 7 Beta 3 To Developers

BGR reports that Apple is planning to release the third beta version of iOS 7 to its carrier partners and registered developers on Monday, July 8. Which is two weeks after the release of the second beta. “BGR has been informed by trusted sources that iOS 7 beta 3 is currently scheduled to be made available to carriers for testing on July 8th. These are the same sources who accurately foretold the release timing of Apple’s last iOS 7 beta, and just like iOS 7 beta 2, it is likely that the new software will be released to developers on the same day it reaches carriers.” » Report: iOS 7 Beta 3 Coming on Monday, July 8

Two weeks after iOS 7 Beta 1, Apple released iOS 7 Beta 2 to developers that is available through Apple’s over-the-air updating system and the iOS Dev Center. iOS 7 will not be available to normal users till the official release in the fall of this year. Beta 1 was only available for the iPhone and iPod Touch, but Beta 2 is available for iPhone, iPod touch, iPad and iPad mini. » Apple Released iOS 7 Beta 2 To Developers With iPad Support

Pebble, the e-paper smart watch that can be used in combination with iOS devices, now has an official public SDK available for iOS developers.

Your patience has been rewarded…you have a brand new Pebble Smartwatch in your hands. And, of course, now you want to make it do your bidding. This developer documentation will show you how to create your own functionality for a Pebble Smartwatch.

Right now, the SDK is limited to creating different watch faces and does not support the creation of standard apps, but the Pebble website says that a Sports SDK will be added soon, allowing developers to incorporate Runkeeper-style features. » Developers Get Access To Official Pebble Watchface SDK

Apple has just released the first beta version of iOS 6.1.1 to developers. The beta arrives as build 10B311 and 9to5mac noted major improvements to Maps for Japanese users. » Apple Released First Beta Of iOS 6.1.1 To Developers

Apple has just pushed out the fifth beta of iOS 6.1 to developers. Developers can download the beta via Apple’s Developer page. It is not known when Apple will release iOS 6.1 to the public.