It is evident, there seem to be no trend of interest from airlines to even give the B748i a second look.
Boeing would have done their homework before investing huge amounts of $$$ in this project as they did with the 747 classics. Remember that not all airports can handle 380's and the 747 is still a popular aircraft. True many carriers have down sized in favour of the 777, but my guess is the 747-8 series is here for sometime.