Google doubled the maximum APK file size limit for Play store apps and games. Going forward, Android developers can publish APKs as large as 100MB - up from 50MB in the past. The change will allow for the submission of considerably richer apps to Google Play. It will also reduce the necessity to download additional expansion files when launching an application for the first time. Despite the new APK file size limit, Google still advises developers to be cautious and not make their apps unnecessarily large. The search giant's developer team points that larger apps require more data to download and install on a mobile network, as well as reduce performance on devices with limited RAM and built-in storage. Source...
Source: http://www.gsmarena.com/google_doubles_the_maximum_apk_file_size_limit_in_the_play_store-news-14209.php