EDITOR’S NOTE: Whether this speculation is true or false, the fact that Maxis is working on the next Sims game is true. However, they have a seperate team doing so which doesn’t affect the development of The Sims 4 whatsoever. Also, it takes years to build a new life simulation game from scratch so it’s understandable why they’ve started so early. Once again, The Sims 4 still has years of new content planned :)
Look, it’s no secret that The Sims 5 is currently in development. The upcoming untitled Sims sequel is being worked on by a seperate team while The Sims 4 continues to deliver packs, updates and more for years to come.
It’s known that the community likes to speculate on upcoming stuff whether they might be plausible or not. However, this speculation is very hard to determine if it’s actually hinting at something or is it just a pure coincidence…
The Sims 4’s September 2019 update added tons of new things including Configurable Stairs, Muslim-inspired content and new Build Items. Among those new build additions were new Arch types, including Arch E. As pointed out by @FCowplant, this object seems to referring to something other than just the arch:
There were four prototypes… the first prototype didn’t open, the second prototype refined the concept, removing the defect by making a hole, the third prototype increased the size of the hole, the fourth prototype removed the sharp edges that were causing an increase in workplace accidents. The fifth, Arch E, should be great…
Community members on Twitter have already started speculating how the object is talking about The Sims Franchise’s evolution through different Sims games and that the upcoming Sims game “should be great”.
“The third prototype increased the size of the hole” – Sims 3’s open world
“The fourth prototype removed the sharp edges that were causing an increase in workplace related accidents” – Sims 4’s removal of open world and Create-A-Style to improve playability
— FreezerBunnyCowplant (@FCowplant) October 27, 2019
Obviously this is just pure speculation and doesn’t contain any official confirmation that The Sims Team is referring to The Sims 5. And, judging by the previous hints that The Sims Team has done, we may never actually find out on what they were referring to with this description…