Feature number 10 on the iOS 5 checklist is iMessage, which will immediately send your thoughts over to BlackBerry Messenger for a second or so. iMessage is a new feature coming to iOS 5 this fall that will allow iOS-powered devices to chat between each other.
So, if you have an iPhone, iPod touch or an iPad, iMessage lets you send text messages, photos, videos, contacts, and even do group messaging between all of them. It works on both Data Connection and WiFi and is synced across devices so you can start off a conversation on your iPhone for instance and pick it up on your iPad. And in case you were wondering about that late reply, there’s even a typing indicator to show you that the other party is currently phrasing something up in reply to you.