RIM has announced plans to launch two additional BlackBerry 4G PlayBook tablets during the second half of 2011, featuring support for LTE and HSPA+ high speed wide area wireless networks.

The BlackBerry PlayBook tablet is already being widely recognized for its superior performance, rich web experience, enterprise readiness and deep support for web standards and open development tools. We are now building on the BlackBerry PlayBook’s many advantages with support for additional 4G networks that will allow enhanced business opportunities for carriers and developers and unparalleled mobile experiences for users," said Mike Lazaridis, President and Co-CEO at Research In Motion.

RIM has now announced plans to offer four BlackBerry PlayBook tablets:

• BlackBerry PlayBook with Wi-Fi
• BlackBerry 4G PlayBook with Wi-Fi + WiMax
• BlackBerry 4G PlayBook with Wi-Fi + LTE
• BlackBerry 4G PlayBook with Wi-Fi + HSPA+

In addition to the Wi-Fi and 4G connectivity referenced above, each tablet can also support Bluetooth tethering, Mobile hotspots (ie. a MiFi™, smartphone or other portable device equipped to act as a mobile Wi-Fi hotspot, check if your Cell phone can do this) and BlackBerry Bridge.

According to company statement, the combination of premium hardware features and design powered by the new BlackBerry Tablet OS and open development tools, along with support for carriers' high speed 4G networks, will provide a high performance platform that enables a mobile services revolution.