Press Release

September 28, 2006

RIM Announces Management-Initiated, Voluntary Review of Historical Stock Option Grants

Waterloo, ON - Research In Motion Limited (RIM) (Nasdaq: RIMM; TSX: RIM) announced today that the Audit Committee of RIM's Board of Directors, comprised solely of independent directors, is completing a management-initiated, voluntary review of RIM's historical option granting practices.  Following the heightened public awareness and concern regarding stock option grant practices by publicly traded companies, RIM elected to commence a pro-active review of its own practices.  The Audit Committee is being assisted in this regard by outside legal counsel and by outside accounting consultants.  The Audit Committee has made a preliminary determination that GAAP accounting errors were made around the administration of certain historical stock options granted from fiscal 1998 to present, and has made a preliminary determination that a restatement of RIM's historical financial statements will be required to reflect this.  Although the review is ongoing, it is currently expected that the potential effect of such restatement will be to increase the amount of non-cash charges associated with past option grants and thereby reduce the amount of the Company's previously reported GAAP earnings by an aggregate amount of approximately $25-45 million over the period since the Company’s IPO in 1997.  The Company has voluntarily informed the SEC and the OSC about its internal review of its stock option grants.  The Company does not at present anticipate a material adjustment to current or future fiscal years’ operating results, including the preliminary Q2 operating results reported today in its separate earnings press release, and RIM has defined enhanced procedures and controls to address issues of this nature. All figures in U.S. dollars.

About Research In Motion (RIM)
Research in Motion is a leading designer, manufacturer and marketer of innovative wireless solutions for the worldwide mobile communications market. Through the development of integrated hardware, software and services that support multiple wireless network standards, RIM provides platforms and solutions for seamless access to time-sensitive information including email, phone, SMS messaging, Internet and intranet-based applications. RIM technology also enables a broad array of third party developers and manufacturers to enhance their products and services with wireless connectivity to data. RIM’s portfolio of award-winning products, services and embedded technologies are used by thousands of organizations around the world and include the BlackBerry® wireless platform, the RIM Wireless Handheld™ product line, software development tools, radio-modems and software/hardware licensing agreements. Founded in 1984 and based in Waterloo, Ontario, RIM operates offices in North America, Europe and Asia Pacific. RIM is listed on the Nasdaq Stock Market (Nasdaq: RIMM) and the Toronto Stock Exchange (TSX: RIM). For more information, visit www.rim.com or www.blackberry.com.

This news release contains forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995 and Canadian securities laws relating to RIM’s ongoing Company-initiated voluntary review of its historical option granting practices, including statements regarding preliminary determinations and expectations regarding the financial impact of the review on RIM’s historical, current and future financial statements. The terms and phrases, “preliminary determinations”, “will”, “expected”, “anticipate” and similar terms and phrases are intended to identify these forward-looking statements.  Forward-looking statements are based on estimates and assumptions made by RIM in light of its experience, its current assessment of matters relating to its ongoing internal review, and its perception of historical trends, current conditions and expected future developments, as well as other factors that RIM believes are appropriate in the circumstances.  Many factors could cause RIM's actual results, or future events to differ materially from those expressed or implied by the forward-looking statements, including, without limitation: final determinations made by RIM’s Audit Committee, outside advisors, auditors and others, additional corrections that may be required based on factual findings and analysis in the ongoing review, legal and accounting developments regarding stock option grants and interpretations of such guidance.  Readers are cautioned to consider the forward-looking statements in light of these risks and others relating to RIM are discussed in greater detail in the "Risk Factors" section of RIM's Annual Information Form, which is included in its Annual Report on Form 40-F (copies of which filings may be obtained at www.sedar.com or www.sec.gov).  These factors should be considered carefully, and readers should not place undue reliance on RIM's forward-looking statements.  RIM has no intention and undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

The BlackBerry and RIM families of related marks, images and symbols are the exclusive properties and trademarks of Research In Motion Limited.  RIM, Research In Motion and BlackBerry are registered with the U.S. Patent and Trademark Office and may be pending or registered in other countries.  All other brands, product names, company names, trademarks and service marks are the properties of their respective owners. RIM assumes no liability and makes no representation, warranty or guarantee in relation to third party products.