
Are the following mentions coreferent?:
<m> announcement </m> in On Tuesday, we reported on rumors that T-Mobile would release the RIM BlackBerry Curve 8900 on February 11, and while the date has not been confirmed, the carrier did go ahead and make the official product announcement. Yes, the BlackBerry Curve 8900 will make its way to T-Mobile some time in February and is being touted as the thinnest and lightest full QWERTY BlackBerry to date. Price and an official release date were not released, but customers can sign up for alerts on T-Mobile's Web site. 
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<m> announced </m> in T - Mobile has announced that it will be carrying the keyboard touting Q10, with pre - registration starting on April 29th. T - Mobile today announced that the BlackBerry Q10 will be added to its growing 4G LTE smartphone portfolio. T - Mobile today announced that the BlackBerry Q10 will be added to its growing 4G LTE smartphone portfolio. 