I don't know if the last three episodes are Orwell-centric. Summer and Tom both said Orwell has a big reveal in 107 and 108, but I don't recall either mentioning the last three episodes being Orwell-centric.
The io9 article is based on a "devoted" fan who has send an email to io9 author Charlie Janes Anders : there are no reliable sources confirming what the last three episodes are about.
It's our responsability to this wiki readers to be very cautious about this; to that regard, i think Chief has a good attitude. For what it's worthy, i think this is bulls**t