Fusion developers report incremental experimental and DOE-backed milestones

General Fusion reported approximately 1.1–1.2 keV electron temperature and 0.46 keV ion heating in LM26 with UKAEA involvement, while Xcimer announced a fresh DOE milestone award for its Phoenix laser-fusion prototype. These are meaningful engineering or measurement signals, but neither demonstrates ignition, validated net electricity, reactor repetition rate, tritium breeding, or commercial economics; new theoretical work on ignition criteria and spin-polarized fuel remains unvalidated.