Tamron announced their Tap-In Console about two years ago, and the two main functions is to be able to update firmware without sending the lens into service, and the second is to finetune focus at three different focus distances and several focal lengths (for primes just one focal length). There are also some other features you may do in the Tap-In utility, such as behavior of the Vibration Control, adjust the focus limiter, sensitivity of the focus ring and so on.
Computer for photo editing
This one has been churning in my head for quite some time now, how can I putt this into words so it will last more than a year and not become outdated?
Well, first off I will strongly recommend a stationery computer and not a laptop. Nothing wrong with a laptop, but to be good enough (read, powerful enough), they need to be expensive, so I would rather recommend getting an “okay” priced and light weight laptop that you can bring with you on the travels and then get a powerful stationary workstation at home. Assembling a stationary computer is a lot easier than it might look like.