Earlier today iOS 8.3 Beta 3 was released as public beta and now the iOS 8.3 Beta IPSW is available for iPad, iPod Touch, iPhone.iOS 8.3 Beta 3

Download iOS 8.3 Beta 3 IPSW

The iOS 8.3 Beta 2 IPSW file links for the iPhone, iPad, iPod Touch and Apple TV can be directly downloaded from the link given below.

iPhone iOS 8.3

iPod Touch iOS 8.3

iPod touch (5th generation)