Changes to the levels Odyssey and Balance have been made in order to block unintended solutions. As with all changes to levels after launch, consideration has been given to whether the disruption to walkthroughs and so on is justified by the benefits of the changes. In the case of these levels I believe the modifications are worth it.
Windowed Mode
During launch week the most popular request by far has been a windowed play mode, so this has now been added and is available from the Options menu.
