Please refer to this earlier post, where the changes in the alignment in the Haflong area are described.
Earlier the old and new alignments could be seen on Google Maps. Now only the new alignment is shown.
A number of stations are no longer on the route and have thus vanished from the railway map. And some new stations have come up.
Here are pictures of the some of the old and new stations. Copyrights of the pictures are with their creators:
Old stations (The one in the top left is Bagetar):
And here is another interesting sign you may see near Jatinga: