While the company wouldn't answer our questions at the time, now it's emailing affected device owners explaining they'll get a $50-70 discount towards a new Kindle and $15-25 in eBook credit, and Amazon tells us that Kindle 1st gen owners are outright getting a free Kindle Oasis.
The shutdown will affect 3G/cellular models of the Kindle 2 International, Kindle DX, the Kindle Keyboard, Kindle Touch, Kindle Paperwhite, 2nd gen Kindle Paperwhite, Kindle Voyage, 3rd gen Kindle Paperwhite, and the original Kindle Oasis.
OG Kindle 1st gen owners are apparently getting a free Kindle Oasis and cover, Amazon tells us.
2nd Gen, DX, and Kindle Keyboard owners, get $70 off a new Paperwhite or Oasis, plus $25 in eBook credit.