WHATSAPP NOW LET'S YOU KNOW IF YOUR MESSAGES HAVE BEEN READ
A new update to WhatsApp's messaging service would see it finally introducing read confirmation. Up until now, users were only informed if their messages had been delivered to the recipient's devices by two grey check marks next to message unlike other messaging services like the BlackBerry messenger which indicates read status. Going forward read messages on WhatsApp would have two blue check marks.
Although my old messages are yet to show this, but holding down on a message and tap on the i button shows that there pans to implement this.