So,it appears we got some Twisted Treeline/Dominion/Tutorial changes coming in the future.
UPDATE: It appears all the map changes that went out yesterday,including the loading art,was reverted/removed.Which confirm those were released too early.
As Riot JxE mentioned,some stuff for the maps mentioned above will head to the PBE in 5.11 (We just started 5.10 guys,don't expect to see these for another few weeks)
From what I can tell from the TT changes that went out too early in today's PBE patch,it appears the other maps will receive the balance treatment ARAM recently got.And the new loading screen art (which might actually go live in 5.10) also hints they may be looking to tocuh up the visuals.
So,it's good to know that the other maps are being looked.I hope Dominion is going to get more than just some balance changes & small visual tweaks.Let's be honest,the entire map needs a VU.
Remember,the changes are expected to come in 5.11 according to the red post.