Looks like descriptions are starting to be filled in for Shiva's awakening

Krystallos? (single target nuke) goes from 4-5x to 6-7x; soft damage cap raised from 600k to 800k
Rig Veda (party assault buff) goes from 20% to... 25-30%; gains +20? element and... stinger/critical buff, I believe. (Kyuusho is the name for that system, isn't it)
Mahakala (all enemies nuke) goes from 2.5-3x to 3-4x; cooldown lowered from 6 to 5, lining up with the other abilities. Also gains a self-only +20 burst gauge?
2nd passive: Reduce ability cooldown when damaged?
Awakening effect added: self-only 3 turn ability performance buff. 'Performance' usually means a buff to both damage and the soft damage cap, and there's a note saying that the first ability's cap gets raised to 1 million+ with this buff.