
Are the following mentions coreferent?:
<m> announced </m> in T-Mobile USA, Inc. and Research In Motion today announced that T-Mobile will offer the BlackBerry Curve 8900 to customers in February. The announcement confirms rumors from December. The Curve 8900 has been upgraded with a 3.2-megapixel camera with image stabilization and video compatibility. It supports microSD cards up to 16GB ( Like the new SanDisk memory cards announced today ). 
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<m> announced </m> in T-Mobile has announced it will be carrying the BlackBerry Curve 8900 smartphone this February. U.S. mobile operator T-Mobile has officially announced it will be offering the BlackBerry Curve 8900 smartphone this February. T-Mobile has not revealed an official release date or pricing information for the BlackBerry Curve 8900, although the unit will work with T-Mobile's unlimited HotSpot Wi-Fi based calling service. 