Finished the first 50 pages of the final book edit tonight. It's 219 pages long. Not quite sure exactly how long it's going to take, but I'm getting through it. I think "when it's done" is what it has to be. Can't release it before then. That would be stupid.
Also, it's going to be no problem releasing a general version for other e-readers besides Kindle, Mr Tom, so it'll definitely be usable on your Sony device.