It's newsworthy now because people are actually digging into the PR fluff and seeking clarification... after the orders have been made.
Previously, from the white paper, Nvidia implied that in the most blasé way possible that 3-Way and 4-Way SLI modes are "no longer recommended". They further grayed the marketing by claiming that if you still want 3/4-way support, an enthusiast key was available. So it was supported, but not recommended. Only now do they state explicitly that they WILL NOT/NOT EVER support it at all for games, specifically, only select applications.
In hindsight it may seem like a minor distinction, but in reality it's a big deal. It doesn't matter if it's a niche within a niche, that SLI has diminishing returns, or that DX12/Vulkan does X, Y, or Z. It wasn't clear to all and now it is.
While 2x1080 is good enough to get over 60fps average in most DX11 games at 4K, people going 5K or 3x1440 multi-display are SOL. Likewise, those minimum frames still aren't above 60fps in many scenarios. I dunno... seems like a bad time to pull support for it. I'd like to think that pulling back support for 3/4-way means that their 2-way SLI will be amazing, but that remains to be seen.