My 2 cents:
Due to the start of the success of the Magic and the continuing complaints about the oil absorbancy of their current coverstocks, I suspect you will be seeing a lot of changes in the coverstocks of all their premium balls. I also believe you'll see it happening in the other Ebonite-owned brands.
By the way, it makes no difference if none of your personal Ebonite or Hammer balls have ever "died" or lost performance. I believe Ebonite has seen far too many reports of performance loss, whether warranted or not, whether the owners clean them or not, to allow them to continue using the resins that absorb oil at very high rates.
If small companies, like Lanemasters and Visionary, can do this, I'm sure a large company like Ebonite can also do it.
FWIW ball cleaning is part of my bowling "religion" and I preach to everyone who will listen.
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"None are so blind as those who will not see."