Press Release

June 6, 2000

Research In Motion Announces A Development Environment For Java Technology-Based Wireless Internet Applications

JavaOne^SMSan Francisco, CA - At the JavaOne conference today, Research In Motion Limited (Nasdaq: RIMM, TSE: RIM) introduced its Development Environment for Java technology that will support RIM Wireless Handhelds™. RIM's leadership and dedication to the Java™ platform will be strongly evident during the conference this week. RIM is demonstrating and distributing its Development Kit (Early Access Version) for the Java 2 Platform, Micro Edition (J2ME) and will also distribute RIM Wireless Handhelds running an early release of the J2ME Connected Limited Device Configuration (CLDC).

The combination of the CLDC and the Mobile Information Device (MID) profile provides an industry standard programming platform that significantly eases the development and deployment of wireless applications. Support for J2ME opens application development for RIM Wireless Handhelds to more than two million Java technology developers today.

"Our BlackBerry™ solution continues to be extremely successful in delivering enterprise-wide wireless email which is really the first wireless Internet application to be broadly adopted by corporations," said Mike Lazaridis, President and Co-CEO at Research In Motion. "There are already two and a half million Java technology developers today, and that number is expected to double over the next few years. By delivering these powerful, standards-based Java technology tools to such a large, growing base of developers, we are taking a major step forward in enabling broader development of wireless Internet, intranet and eCommerce applications."

RIM has been actively working within Sun's Java Community Process^SM (JCP) initiative to help define the Connected Limited Device Configuration and the MID profile. This effort has helped ensure that J2ME is optimized for RIM's wireless handhelds and RIM's BlackBerry wireless email solution. It also ensures that RIM developers are able to create wireless applications using a standard Application Program Interface (API).

"The Java Platform's success has always been based upon its strong appeal to software developers," said Curtis Sasaki, director, Product Marketing, Sun's Consumer Technologies. "RIM's offering is a great example of how a robust Java runtime environment combined with a full suite of developer tools is a powerful combination for developers to create popular and commercially successful Java technology-based applications."

At the JavaOne conference this week, RIM is distributing its Early Access Development Environment for Java technology that will allow developers to preview RIM's offering and become familiar with RIM's APIs prior to building and porting applications. RIM's full Development Environment for Java technology is expected to be available later this year. RIM's Development Environment is based on open standards and includes a device simulator and real-time debugger with a full suite of integrated utilities to help quickly build, test and deploy applications. Compliance with J2ME, CLDC and MID profile specifications provides a "Write Once, Run Anywhere™" cross-platform environment that attracts and supports a broad base of developers.

"J2ME is a technically elegant solution for wireless handhelds that provides a robust development environment based on open standards while accommodating inherent constraints such as battery life, memory, processing power and bandwidth," said David Yach, Vice President, Software at Research In Motion. "With full J2ME, CLDC and MID profile support, RIM will also be able to provide developers and customers with support for wireless distribution, maintenance and configuration of applications on RIM Wireless Handhelds."

For information about RIM's Developer Program, visit the RIM Developer Zone at http://developers.rim.net

About Research In Motion

Research In Motion Limited is a leading designer, manufacturer and marketer of innovative wireless solutions for the mobile communications market. Through development and integration of hardware, software and services, RIM provides solutions for seamless access to time-sensitive information including email, messaging, Internet and intranet-based applications. RIM technology also enables a broad array of third party developers and manufacturers in North America and around the world to enhance their products and services with wireless connectivity. RIM's portfolio of award-winning products includes the RIM Wireless Handheld™ product line, the BlackBerry™ wireless email solution, wireless personal computer card adapters, embedded radio-modems and software development tools. Founded in 1984 and based in Waterloo, Ontario, RIM is listed on the Nasdaq Stock Market (Nasdaq: RIMM) and the Toronto Stock Exchange (TSE: RIM). Investors may contact investor_relations@rim.net. Customers may contact info@rim.net. Web site: www.rim.net.

Research In Motion, RIM, the RIM logo, RIM Wireless Handheld, and BlackBerry are trademarks of Research In Motion Limited. Research In Motion and RIM are registered with the U.S. Patent and Trademark Office. Sun, Sun Microsystems, the Sun logo, Java, Java Community Process, JavaOne, Write Once, Run Anywhere and the Network is the Computer are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and in other countries. All other brands, products and company names mentioned herein may be trademarks or registered trademarks of their respective holders. Forward-looking statements in this news release are made pursuant to the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. Investors are cautioned that such forward-looking statements involve risks and uncertainties, including, without limitation, risks relating to possible product defects and product liability, risks related to international sales and potential foreign currency exchange fluctuations, risks related to the year 2000 issue, continued acceptance of RIM's products, increased levels of competition, technological changes, dependence on intellectual property rights and other risks detailed from time to time in RIM's periodic reports filed with the United States Securities and Exchange Commission and other regulatory authorities.