AT&T BlackBerry users who’ve bought the PlayBook will be able to link their devices Friday. (DANISH SIDDIQUI/REUTERS)

The app allows BlackBerry owners to link their phones to their tablets. A report from All Things D says that tablet users will be able to access basic information from their BlackBerrys without paying for a tethering plan, but will need to pony up $20 per month to use their phone’s Internet connection on the PlayBook.

RIM said in its last earnings call that it had shipped 500,000 PlayBooks. The company also said that it would have 4G versions of the tablet this fall.

Research in Motion is facing questions about the state of its company, and issued a statement Thursday saying that it will reexamine its corporate structure and look into a proposal that suggests the company split the roles of CEO and chairman.

RIM is currently headed by co-CEOS Mike Lazaridis and Jim Balsillie.

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