I too have been informed by a few Bell reps that the 7100 is expected by the end of Q1. According to one rep I spoke with last week there is a number in their system for the 7100 but not for a 7750 replacement as yet. Personally, I am awaiting a new traditional qwerty design berry. The 7520 was recently released for Nextel on iDen networks and may come to telus on the mike network, I've heard nothing official of a 7200 for Bell as yet. I hope this rumour is true.
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After a bit of research I located unofficial confirmation for the 7250.
Check it out here -
http://phonearena.com/htmls/readarticles.php?id=447