The 360 might be going through a (useless?) rebranding in the next few weeks, changing the box art to a more greenish wave.
These are from different press materials, but they seem to coincide with the E3 MS invite in the first picture. Personally I don't like it much. It doesn't do anything extra and reminds me of grass and palm trees.. ugh nature! Actually that design also removes the Xbox Live logo, you know, the brand they have spent so much money and time to promote.