There isn't one. They want Insiders to test, and IT folks to deploy, a non-GUI version. Might be good for some things but most of my stuff requires a full GUI install.
yeah us old timers and youngans like GUI but powershell can also do anything for the script kiddies and basement dweller linux gurus who love command line
My guess is that they want to release an R2 version and charge money to re-license it for the GUI updates. In which case, they can keep it.
I often feel M$ keep having changes in direction... It makes hard for those of us who have Microsoft certifications when they change there direction making obsolete skills we trained hard for and paid for exams on. I wish they would just make a plan/direction then go with it. More u turns than a bloody politician...