One of the things I got to do recently was to go on a drive beyond Bangalore. One change that gladdened my heart was the new highway from Hebbal onwards. While most of it is under construction, the stretches that are complete are fabulous (if only by Indian standards). While I cannot say much about grade separators, medians, greenery, safety, lanes, and the like, the ride was damn smooth.
See this site (particularly the Indian Highways -II forum) for some snaps...
I'll post more links as and when I can.