though the sentences pasted below are a little vague, i have seen no indication at&t will stop supporting bold or other blackberries currently operating on its network. i think at&t appreciates its blackberry customers and wouldn't leave them in a lurch. and i continue to hold out hope (perhaps naively) at&t will hook up with rim to offer a new bold-sized device that runs on at&t's 4g network once it's rolled out
AT&T to start LTE rollout by mid-year, finish by end of 2013 - Computerworld
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De la Vega also said that AT&T going forward with plans to support smartphones running on operating systems from Apple, RIM BlackBerry and Windows Phone 7, along with HTML 5 support.
He didn't elaborate, however, on specific devices from each OS.