Oldies splash art rework

So I'm hoping someone from riot can answer this or at least anyone that knows the answer to this, but a couple months ago and I'm pretty sure everyone noticed, Miss Fortune's Old skin splash arts got a rework to fit in with the modern time, then the Irelia rework fixed her old skins as well, so I was curious, Is every champion with a old skin gonna get a rework or was it just those few champions that were gonna get changed? Cause I liked it to be honest and hope there will be more. If not eh. It was still nice.