http://www.theverge.com/2013/10/31/...exus-will-not-be-upgraded-android-4-4-kit-kat
Now guess which soc google used on the prototype project ara phone? https://www.youtube.com/watch?v=BSo3KeGUNO4&t=349
Seems they chose the ti4460 because its an extremely well documented chip, ti is extremely helpful in supporting the product, and there's wide range of development hardware like the panda board for developer use. Seems like the galaxy nexus would be perfectly suitable for kitkat with all that support.
Google also notes that the Galaxy Nexus uses a chip made by Texas Instruments a company that's no longer actively developing smartphone chips. So it could be that trying to get everything in 4.4 working on that chipset would have been fairly burdensome.
Now guess which soc google used on the prototype project ara phone? https://www.youtube.com/watch?v=BSo3KeGUNO4&t=349
Seems they chose the ti4460 because its an extremely well documented chip, ti is extremely helpful in supporting the product, and there's wide range of development hardware like the panda board for developer use. Seems like the galaxy nexus would be perfectly suitable for kitkat with all that support.