Yeah, and it's not just APIs. Some of the changes are much more subtle, e.g. how often a particular event fires. If you're not careful these can destroy performance in baffling ways.
If you make an effort to stay on top of all the latest OS releases, life is great, but it's frustrating when you're trying to remain backwards compatible and figure out what the heck is going wrong on the new OS.
If you make an effort to stay on top of all the latest OS releases, life is great, but it's frustrating when you're trying to remain backwards compatible and figure out what the heck is going wrong on the new OS.