It seems that every recent iOS update turns Bluetooth back on if you had previously disabled it. Why would Apple do this? Kashmir Hill of Forbes proposes that the answer has something to do with iBeacons. follow link
Track Changes Dates Reset on Save As in Word 2008
If you regularly use the Save As feature to create new drafts while working in Word 2008, you might notice that with Track Changes enabled, previously time-stamped comments and edits have their times reset to the Save As date and time. Work around this by sticking with your original file, but using Save As (or just File > Duplicate in the Finder) to make backup copies.
Why Apple Keeps Turning on Your Bluetooth
I have spoken with a developer who could not comment but would say that "we were doing what the design specs called for."
For whatever reason, Bluetooth is being enabled after each IOS upgrade I concluded that it was/is a conscious decision by Apple. To what end I do not know. Are there any other preferences or hidden features they are enabling that we are not aware?