Their engineering team produced a much smaller version and their competitors had products very similar to the mini. So there was a very good reason to release the superior product -- why hold back?
What was great about the mini -> nano transition is that they did actually kill the mini. Too many companies would have hedged their bets and kept it around, which I think would have been a mistake.
What was great about the mini -> nano transition is that they did actually kill the mini. Too many companies would have hedged their bets and kept it around, which I think would have been a mistake.