In a day and age where the only time I connect my iPad and iPhone to my MBP is to transfer photos, because I prefer it over photo stream, why in the world would Apple switch the dock connecter? It doesn't make any sense to me to create a new connecter that the iPad isn't updated to. So now people have to carry 2 cords in my Booq bag rather than my universal one. I don't know, maybe it's just me, but I think the idea is ridiculous.
In the grand scheme of things, I guess Apple is just making money.
Think about it: They've had that same dock connector for nearly a decade now. They can't leave it there forever. Eventually it'll just take up too much space that could otherwise be used for a larger battery, to move some things around (in this case it involved moving the headphone port to the bottom so that Apple could use the room given up at the top to use the in-cell tech that is rumored to be in the next iPhone), reduce thickness, get rid of unnecessary pins and make the speaker on the bottom bigger, etc.
Apple needed to get rid of it. If they were in it just to make more money off of new accessories/cables, they'd have done this a long time ago. So for now you'll have two cords, but in a year or two, it'll be back to one cord as the whole iOS device lineup is said to be getting the new connector either this fall, or early next year. The new connector is also rumored to support USB 3.0 which will make syncing, backing up, restoring, etc. faster.
And anyways, even if this is still a huge issue for you, just buy an old-to-new cable adapter that Apple will be selling for $10 once the new iPhone is out. Keep the adapter connected to your old docks, speakers, whatever and you'll never have a problem.
This really is a non-issue. I just do not understand why some people are saying that they're doing it just for the money or are acting like it's the end of the world (not saying you are, just a lot of people are in general, when in reality it is a non-issue). At the rate that technology is moving, I'm surprised that they even kept it for so long. They easily could've done this years ago.