A new preprint from Di Mauro and collaborators delivers the most controlled characterization yet of the Galactic Center Excess (GCE) using Fermi-LAT data. Employing an optimized multi-step fitting pipeline and iterative source-finding on a 40°×40° region, the analysis reduces fractional residuals to ≲10% across multiple GALPROP interstellar-emission models. The surface-brightness profile favors a spherical generalized Navarro-Frenk-White form with inner slope γ ≃ 1.15, remaining significant even when bulge templates are included simultaneously. This morphology deviates from nuclear-plus-boxy bulge expectations at 1°–2° and beyond 8°, undermining purely astrophysical bulge-tracing scenarios. The spectrum peaks near a few GeV and yields only upper limits above tens of GeV (E²Φ ≲ 10^{-8} GeV cm^{-2} s^{-1} sr^{-1}). As a preprint (arXiv:2605.22913, May 2026), these results await peer review. Compared with earlier analyses (Ackermann et al. 2017, ApJ), the tighter residuals expose how prior IEM uncertainties masked the excess’s central concentration. Cross-referenced with Calore et al. (2015, JCAP) on WIMP annihilation spectra, the new constraints exclude thermal-relic cross sections for masses above ~50 GeV while leaving lighter candidates viable only if velocity-dependent. The work highlights a persistent gap: no joint multi-messenger test yet combines these gamma-ray limits with radio synchrotron bounds from the Galactic Center, an omission that future SKA observations could close.