WhatsApp developers have released a new update for its Android beta program run through Android program. In this beta vesion you can select and send up to 30 images or video together at a time. This feature is only available on WhatsApp beta version. On official WhatsApp application, you can only select and send 10 images/videos together at a time.
To get beta versions of WhatsApp through the playstore, you have to sign up as a tester. To be a tester go to this site and accept terms and conditions.
Then you can update WhatsApp from here. To install an APK, make sure you head into Settings > Security > Unknown sources and ensure the toggle is on. Then tap on the downloaded apk file, and select install.
Another new feature on this app is that you can search and send gif images from smiley selection tab.