the PlayBook. Applications At the time of launch, between 2,000 and 3,000 apps were available from the BlackBerry App World. As of May 1, 2012, there are over 24,700 PlayBook applications available in BlackBerry App World. BlackBerry announced on March 24, 2011, that it would expand its application ecosystem for the PlayBook to include BlackBerry Java and Android-based applications. In a press release, BlackBerry stated that developers would be able to simply repackage, code sign, and submit their Android apps into BlackBerry App World, however for the first update, only Android 2.3 applications will be able to run on the PlayBook. These applications became available in the BlackBerry Tablet OS 2.0, released on February 21, 2012. However, Java applications will not be available until a future update. Popular Android applications that have not been ported onto BlackBerry world such as Pinterest and Whatsapp can be installed by users through the sideloading process. However, after the 2.1 OS update, RIM denied this sideloading process. Updates to operating system At first, a decision by BlackBerry to ship the PlayBook without native applications for e-mail and calendar became a source of criticism and derision by reviewers and users. The only way to access email was through the web browser, BlackBerry Bridge, or third-party applications from App World, which BlackBerry chose for security reasons. However, BlackBerry has made these native applications available in an update to the system software. The Playbook OS 2.0 was released on February 21, 2012. The software update added integrated native email, calendar, and contact apps. It also included visual changes to the operating system, support for a variety of Android applications and also brought three new applications built into the OS: Press Reader, a newspaper reader; News, an RSS reader; and Print To Go, which can be used to send documents from a PC to the PlayBook. BBM (aka BlackBerry Messenger) support was not included with the 2.0 update, although BlackBerry intends to support BBM in a future update. BBM is still supported through the BlackBerry Bridge software, allowing users to continue to have access to it while bridged to their BlackBerry smartphone. On October 3, 2012, BlackBerry released Playbook OS 2.1. On January 30, 2013, BlackBerry confirmed that both the Wi-Fi PlayBook and the newer cellular PlayBooks would be receiving an update to the new BlackBerry 10 operating system in 2013. On June 28, 2013, the company announced