World Model Surge: Acquisition, New Architectures, and Endorsements

World models are now a validated commercial frontier: Anthropic acquires Decart AI for billions, signaling big players betting on causal/physical simulation. New architectural innovations: Kunlun Tech's Patch Memory (3D coordinate patches for object persistence) and Alaya-EVOKE (externalized world state bank) strengthen memory-centric world models. EnvACE's world rehearsal for agentic RL and ELWM's energy-structured latent states add to the toolkit. MIT CSAIL's GeoPT introduces synthetic dynamics pre-training for physics foundation models, achieving 60% less data and 4x faster convergence. Gary Marcus and François Chollet endorse neurosymbolic world model synthesis. The trend is moving from theory to practical, deployable systems with persistent memory and physical grounding.