Sony's reportedly released a hardware update for PlayStation 3, adding in an improved, cheaper RSX graphics chip that makes the console less likely to be affected by YLOD and uses 15 percent less power.
The 45nm version of the RSX chip is in place of the original 65nm chip. It apparently uses two 128Mb XDR RAM chips instead of four 64Mb versions.
Sony hasn't formally announced the new hardware SKU, codenamed CECH-2100A, yet.
Expect more on this soon.