Manuel Rego will be presenting a talk at the HTML5 DevCon 2015 in San Francisco this week. He will  share his perspective of the specification as an implementor and explain some internals about how Grid works. The talk will be on Tuesday  (October 20) at 1:30pm at the CJM classroom, so if you are attending, please don't miss it. 

Igalia has been working on the CSS Grid Layout implementation on Blink and WebKit since 2013 as part of a collaboration with Bloomberg. The feature will soon be shipped in Chromium!