If you are returning to Karnataka after a few years, you may find many railway stations with unfamiliar names. Here are all of the recently renamed stations for which pictures are readily available. Copyrights of the pictures rest with the respective photographers.
The only non-obvious one is Saidapur, formerly Narayanpeth Road. As the station now named Chikkamagalur was opened as recently as 2013, I am not sure if it ever had the original name of Chikmagalur. The sign at Kalaburagi is the most recent one to be changed.
Then there are a few stations which are supposed to be renamed, although no pictures of the new signboards could be seen on the net until mid-December 2018. These existing stations are:
While Shimoga Town and two nearby stations have been renamed in railway databases, no picture of the new station signs have turned up so far.
Here is a notification issued by the South Western Railway:
A few places such as MNGT and UBLS are not passenger stations. While SUBL looks like a passenger station, it does not seem to have passenger services at present.
This does not include Mangaluru Central and Mangaluru Jn which are on the Southern Railway. They have indeed been renamed and the signboards have been changed. Then there is Gulbarga/Kalaburgi which is on the Central Railway. While the new name can be seen on signs in the city, the name has NOT been changed in the databases and the signs remain unchanged.
And there are several which were renamed in the last 70 years or so, including Bowringpet, Sagara, Yedatore, Seringapatnam, Closepet and French Rocks. I may have missed out a few.
Mysore state was itself renamed to Karnataka in 1973. This was justified as the former princely state of Mysore was not the only constituent of the Kannada-speaking state, which also included Coorg (Kudagu) state and parts of the Bombay Presidency, Madras Presidency and Hyderabad state.