
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 that it will carry the BlackBerry Q10, and business registration will begin at T - Mobile. com on April 29. 