|JAL 787 in new livery (Source: Boeing)|
The slip has to do with the certification process of the GEnx engines. Due to lack of production aircraft required for the certification process, GEnx engines won't be able to complete the testing needed until Jan 2012. And that's the reason for the slip.
Now JAL is only expecting 4 787's to be delivered in the current fiscal year, one less than the original plan. When JAL finally receive these state-of-art 787s, JAL will deploy them on daily service to Tokyo Haneda-Beijing, 3 weekly Tokyo Narita-Moscow, and 4 out of the 5 weekly Tokyo Narita-Delhi flights from March as announced earlier. And of course, JAL will be launching the Tokyo Narita-Boston route on Apr 22 2012 as planned.
So we are now one step closer to seeing what's in-store on JAL's 787. Hopefully more pictures will be available soon when the lucky Japanese passengers get to tour the Boeing factory in the next few days.