WhatsApp Inc. has introduced some new more exciting features in the latest version 2.12.228 at their official Android download page. This update is yet to release in Android Play Store soon. Still you can visit their page and get the latest upgraded version for free.
The latest version includes color options for the smileys (few more upgraded with this option) which is already available in old versions.
Interesting new feature is Google drive backup, with which you can Back up your messages and media to Google Drive. In case if you change or lose your mobile the chats, images and videos will always be safe in the Cloud.
You have to just give authorization with a Google account for the backup and messages will start syncing and all your conversations get safely stored in the drive which can be restored while changing your phone or at any time you want to get back those conversations.
You can also change the settings at any time in Settings >> Chats and Calls >> Chats Back up