
Are the following mentions coreferent?:
<m> announce </m> in T-Mobile has officially announce that they will launch the new RIM BlackBery Curve 8900 sometime in mid-February. Previously, the date of February 11 was leaked. 
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<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. 