The Whatsapp Beta app for Windows Phone has witness another update, jumping to the version 2.12.278.
The visible change to the Beta users is the new Chat UI. Seems like the WhatsApp Beta just went for a session with a cosmetic surgeon. In the chat windows, the style of displaying the consecutive messages from the same person has been iterated, the space between messages has been reduced to make reading more messages on single screen fold easier..
The good part is that once these kind of changes appear in the beta version, similar changes are pushed to the official app in a week's time.
Are you one of the Beta Tester of WhatsApp? Let us know if you find any more changes.