In my order status it says "Processing Item. Dispatched: Ships by Oct 14". Is this same for all UK orders?
Dispatched is the key word.
You would think the fact it shows the word 'Dispatched' that it has dispatched, but if you hold your mouse on the blue arrow to the right of 'Processing items' it explains the process:
We've received your order: We've received your order and will begin processing it soon! You can modify your order details once the order enters the processing status.
Processing Items: We are processing your order now. You can modify your order details through online Order Status, or by contacting Apple Online Store Customer Service.
Preparing for Shipment: We are preparing your item(s) to dispatch. While your order is being prepared, we are unable to modify your order details. We will email you a Dispatch Notification with complete order details once your order leaves our warehouse.
Shipped: Your order has dispatched! You will see track shipment button in 24 hours on Orders page.
Complete We've billed you for Apple services only. You will not receive a physical item.
At the moment the UK orders still seem to be at the 'Processing items' stage, and haven't actually been dispatched yet (which is why we can still change the shipping address). As I posted earlier, I think the UK orders will ship from the UK so we won't see 'Preparing for shipment' until Wed/Thu.