
Are the following mentions coreferent?:
<m> confirmed </m> in On Monday, 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 on Tuesday. 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. It will have integrated Bluetooth and GPS and we now know it will have built-in Wi-Fi as well as support for T-Mobile's Unlimited HotSpot Calling service. 
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<m> announced </m> in Research in Motion today announced that T-Mobile USA will start selling the new BlackBerry Curve 8900 smartphone to its customers. Dubbed as the thinnest and lightest QWERTY BlackBerry, the Curve 8900 will feature built-in GPS with support of location-based services, WiFi with voice and data support, a 3.2 megapixel camera with digital zoom, image stabilization and flash, video recording and playback, a music player, a 3.5mm stereo headset jack and a microSD/SDHC memory card slot with a 256MB card included in the box. 