Whats new app? Group Chat with 250 now

Whatsapp has made a measured improvement. The new app allows users to group chat with 256 people now as against 100 at present. Like with all apps, there is a need for upgrading of technology. It will work only with V2.12.367 android. Updated mobiles may also use the benefit. The company says the new app will be introduced in Windows and Blackberry also. Mobile technology is changing by the day and apps are being introduced by the thousands. Can the mobile users keep pace with the changes? The apps should be compatible with the existing mobiles. For a new app, why buy a new version altogether? At this rate, all mobiles will come from China markets.