Jeremy Horwitz, writing for 9to5mac:

Apple’s discontinuation of the iPad mini leaves the remaining iPads as a completely 64-bit family, all using either A7 or A8X processors rather than the iPad mini’s aging A5. It also means that all remaining iPads have Retina displays and unified Wi-Fi + Cellular models.

This ought to help Apple’s supply chain management. If you can get a good deal on an original iPad mini, it continues to make an excellent book reader.

Update: Benjamin Mayo points out that the iPod touch is still 32-bit and several people point out that the iPhone 5c is also 32-bit. True enough. Remind me not to post before I’ve had my coffee.