The content is 100% unique on that post. You can check that with any plagiarism software you can. The only matching thing are the youtube videos, on which mashable has no copyright etc.
I still gave a reference to that post.
This is the news i covered yesterday:
‘Apple Fixture Installation’ At Best Buy Hints At October 21st iPhone 5 Launch (http://www.gizmocrazed.com/2011/09/apple-fixture-installation-at-best-buy-hints-at-october-21st-iphone-5-launch/)
After that sites like Techrunch and Redmondpie covered the same news with almost the same content. Does that mean they copied as well?