The message I just got says I can now buy a new phone and keep my present plan. Is that true?
You can buy a new phone and keep the same coverage. All new phones come with the 3.0 plans.
As Bill points out, the email said you could keep the same coverage* ***NOT plan. It simply meant that many of the phones can now be activated on Sprint, like the phone you already have. They still require the new plans however.