Quick post: The Register UK is reporting that people have started to receive emails asking them to verify their Apple ID ... this is an attempt to steal your information and purchase computers and music with the credit card you have registered with your iTunes or Apple store account.
Just know this ... it would be national news if something like this happened AND Apple (or any other large corporation) would never send you an email asking you to visit their site and type in details.
Remember, online sites such as Apple, Paypal, eBay, Amazon, and your bank ... all have this information ... they have it backed up twice over ... they just don't have the need to ask for additional "verification" and they would never publicly announce that they had a security breach ... the national news would announce that for them.
PS - don't confuse this phishing scam with Apple's ID resetting emails ... if someone has tried to log into their Apple ID account 3 times - you are sent an email requesting that you reset your Apple ID.
Read this story to see what I mean: http://www.oreillynet.com/pub/wlg/6440
Here is Apple's page discussing Apple IDs: