Supplemental Result?

New(?) info right of the page size on SERP

[captainhannes]

Hi all!

I just discovered the text "Supplemental Result" in a SERP.
Is this new?
What does it mean? (How is it related to the other SER's?)

Thanks a lot in advance!

Best regards,
Hannes.

[msr986]

See:

[webmasterworld.com...]
[webmasterworld.com...]