Originally Posted by jswinden
If 5.1.2 is to fix a bug in 5.1.1 that many, if not most, of us never had pushed to our Touch, then I wonder if they will need to push 5.1.2 to us? Perhaps we will not get 5.1.2 either? Not that it matters as it would apparently do us no good unless we have 5.1.1.
You're getting something wrong here. Let's look at the (possible) time line:
t1: Amazon releases and pushes 5.1.0, but keeps developing internally.
t2: Eventually, they figure that 5.1.1 is good enough (or maybe needed because of some hardware change), and starts equipping factory-fresh Kindles with 5.1.1.
t3: We discover the security vulnerability in the 5.1.0 browser. The vulnerability is also present in 5.1.1. This puts pressure on Amazon to release a fix for both 5.1.1 and 5.1.0.
t4: 5.1.2 is released.
5.1.2 internally contains two different update "modules": one which affects 5.1.1 and is relatively small, and one which affects 5.1.0 and is somewhat bigger - because it also
includes the changes between 5.1.0 and 5.1.1.
Anyway, the net result is that whichever firmware you had before the update, you will have a common 5.1.2 one after the update.
I suppose that Amazon will wait a few more days to see if there is any negative feedback from users manually installing the update, then start pushing it automatically to 5.1.0 and 5.1.1 devices.