iMessageWouldn’t it be great to send text messages to OS X Lion users from your iPhone, iPad or iPod Touch for free? Reportedly that’s what will be happening according to an iOS developer. A developer revealed to MacRumors evidence that Apple is currently working to bring iMessage into OS X Lion’s iChat messaging software.

Buried in the framework of OS X Lion’s iChat, are two new properties (highlighted below):

@interface IMMessage : NSObject
IMHandle *_sender;
IMHandle *_subject;
NSAttributedString *_text;
NSString *_plainBody;
NSDate *_time;
NSDate *_timeDelivered;
NSDate *_timeRead;

iMessage is a SMS text messaging feature that will be available in iOS 5 that allows all iOS users – iPhone, iPad, iPod touch to send and receive text message via 3G or WiFi for free.