Classick commented on some upcoming tweaks to Ryze's damage output. Personally, Ryze has surpassed Annie as my "go to AP carry" since his massive rework a few months ago. I am sort of disheartened to see the nerfs, but comboing out on an Ashe from full to 0 in 2 seconds is a bit too boss.
"Ryze puts out a little too much damage at the moment for the amount of survivability he has and for how low his cooldowns are. We are doing a couple small tweaks this patch to help put him into a more desirable spot balance wise."
- Classick, Riot Intern Team, via the official forums