One piece of news from the London keynote event was Apple's first public stance on SIM unlocking tools that have become available for the iPhone. The freely available software unlocks the iPhone from AT&T's service and allows users to use any SIM card from any network.
When questioned, Steve Jobs indicated that they will actively try to stop SIM unlocking:
"It's a cat-and-mouse game," said Jobs. "We try to stay ahead. People will try to break in, and it's our job to stop them breaking in."