I'm sorry, I missed the 787 part and I'm probably a bit complacent as the 737 until last year was the only Boeing type in service that used IAN, therefore I went my merry way down the wrong path. Yes, with NG I do mean the 737 NG which served in the last 10 years as line-testbed for new flightdeck stuff now being rolled out on new types, like IAN, VSD or the ISFD.
But the 737 has some disadvantages, mainly because some big customers (for example a big US low cost company) wanted it that way to maintain communality with older variants, so there is no stuff like auto tuning or EICAS, although both are technically possible.