As per indications, all the four riparian states are separately planning to challenge the verdict in the Supreme Court.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/fresh-trouble-krishna-tribunal-verdict-challenged-riparian-states
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-chronicle-telangana
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/telangana
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-disputes
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/krishna
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/supreme-court
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources