Yet a new patch has come in the new season. It's time to see what it's about. Mostly bug fixes, and adjustments since the deathfire grasp item removal.

"We were taught to be polite when delivering tough news, so now that pleasantries are out of the way, here we go: back in the foreword of patch 5.2 we mentioned that 5.2 and 5.3 were going to be our Deathfire Grasp-removal patches, but now that we've been hard at work, we realized we could use an extra cycle to build confidence. So that means we've delayed a few dudes we promised would come in 5.3, including Veigar, Mordekaiser, Katarina (more on her below), and a new +120 AP item to replace the gap left in DFG's wake. We're aiming for 5.4 and are expecting to stick the landing (except maybe the new item, as it's a bigger project and might take longer!).

As an aside, we've been keeping a close eye on all champions who were affected by the passing of Deathfire Grasp and haven't seen a real impact on performance. We're not saying this to justify the removal of an item that many felt were important in their builds (in other words, we're not dismissing your feedback!), but it's an interesting tangent we wanted to explore."
http://euw.leagueoflegends.com/en/news/game-updates/patch/patch-53-notes