The following changes have been made to the build system user interface:
Hob GTK+-based UI: Removed because it is unmaintained and based on the outdated GTK+ 2 library. The Toaster web-based UI is much more capable and is actively maintained. See the "Using the Toaster Web Interface" section in the Toaster User Manual for more information on this interface.
"puccho" BitBake UI: Removed because is unmaintained and no longer useful.