It is possible to go beyond 1008 pixels to a larger breakpoint of 1280 pixels. From 1008px - 1279px the grid should remain a fixed at 1008px and then snap to 1280px.
Currently the only site I'm aware that supports this breakpoint is http://www.bbc.co.uk/sport - I think the homepages but not the article pages support this breakpoint.
The standard is obviously responsive but the 1280 size is optional maybe because the content doesn't work so well at this size - due in part to readability of wider columns? The spec hints at this being a consideration when it says for one example 'a centralised reading experience with a suitable line-length'
This is a fixed breakpoint (the grid above 1008 doesn't stretch but it snaps to 1280 at a fixed point) indicates this is a special design case and not universally applied.
Small columns are fine for images and headlines - not much else.
'Microsoft no longer positions Windows 10 Mobile as a mass-market challenger to Android or iOS, but instead is pushing the platform for business devices. At Mobile World Congress (MWC) this week new Windows 10 smartphones from HP, Sony, Alcatel, Panasonic and others show that that vendors are willing to try to make it work in this new context.'