Why in the world would a pre-installed Apple SIM be a good move for the iPhone? What's so difficult about taking the Nano-SIM you already have in your previous phone & putting it into your new phone? Having a preinstalled Apple SIM would just make those of us who are no longer in a contract with their carrier more difficult. I don't want to deal with having to spend more money to get another SIM activated when I already have a perfectly good Nano SIM I could use. Why not just continue to sell iPhones with no SIM included, for those of us who already have a SIM?
Would this pre-installed Apple SIM be easily removable?
I didn't see any suggestion that you will not be able to use a SIM you already own. With an Apple SIM, you can change carriers without having to go purchase a new SIM card from another carrier and monkeying around with tools. You could possibly switch month to month - to do that on my iPad, I have to juggle 2 SIM cards and a tool all the time. I would welcome a seamless switch of networks.
Now, all of the above could be meaningless if:
1. Apple seals the Apple SIM in without a door
2. The carriers lock the Apple SIM to their network on activation.