Sony slipped a major hardware revision into the PS5 Slim sometime in September 2026, and the only way you'd know is by cracking one open. Console technician Modyfikator89 tore down a Wolverine Limited Edition PS5 Slim and found a completely redesigned interior bearing a new EDM-051 motherboard, PS5 Pro-style cooling improvements, and a user-replaceable CMOS battery. Sony mentioned none of this in any announcement, didn't update the manual, and left the box completely unmarked.
The biggest practical change is the CMOS battery. On every PS5 Slim until now, swapping the CR2032 cell required removing the heatsink and dealing with the liquid metal thermal interface underneath. That's not something most people want to attempt at home. The new revision moves the battery to an accessible position behind a single screw, matching the approach Sony took with the PS5 Pro. CMOS batteries can last years, but they do eventually die, and when they do, you want the swap to be simple.
The cooling system got reworked too. The liquid metal containment around the APU now looks closer to the PS5 Pro design, with less surface area exposed directly to the thermal compound and better control around the processor. The heatsink itself uses different materials and construction compared to earlier Slim models. Sony has quietly tweaked PS5 cooling multiple times since launch, and this appears to be another step in refining thermal management and preventing the liquid metal leaks that plagued some early units.
The motherboard layout has been simplified overall, with components rearranged in ways that suggest Sony is still optimizing manufacturing. None of these changes affect gaming performance. This isn't a spec bump. It's about reliability, repairability, and long-term serviceability.
The frustrating part is that there's no way to know which revision you're buying. The Wolverine bundle shipped on September 15 at $649.99, and at least some of those units contain the new hardware. But Sony has a long history of rolling out silent revisions across the PS5 line without updating model numbers, packaging, or documentation. Two identical-looking PS5 Slim boxes sitting on a store shelf could contain meaningfully different internals, and you won't know until you're past the return window and someone pops the cover off years from now to replace a dead battery.
If you're buying a PS5 Slim today, you might get the new revision. You might not. Sony isn't saying, and that's the problem.
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