The latest news is about a massive price increase of the Japan Rail Pass. According to the newspaper article, this should be applied around October this year.
So far there is no news about possible price increases of the Kyushu Rail Pass, here you find more information.
Visit not crowded tourist places on Honshu, visit Kyushu!
Avoid expensive airline tickets for domestic Japanese flights by booking early. Check with ANA (All Nippon Airways) for a trip from Tokyo to Miyazaki, the same applies to Fukuoka, Oita or Kagoshima, choose round trip, “Super Value”.