Announced is not shipping, and a roadmap is not a node. The cleanest way to check a foundry claim is to read what the company is willing to put in an SEC filing. Intel (INTC) has put its 18A architecture claims in the 10-K, and the language is specific.
In its annual report on Form 10-K for the period ended December 27, 2025, filed January 23, 2026, Intel states that Intel 18A introduced two breakthrough technologies: RibbonFET and PowerVia. The filing - surfaced through EdgarBeast, the SEC filing data API and evidence index - identifies RibbonFET as Intel's implementation of a gate-all-around (GAA) transistor.
Gate-all-around is the successor to the FinFET. In a GAA transistor the gate wraps the channel on all sides rather than three, giving tighter electrostatic control and less leakage as devices shrink - the physics reason the industry is moving to nanosheet channels. PowerVia, Intel's name for backside power delivery, routes power from beneath the transistors so the front-side metal is freed for signal routing.
The continuity across filings sharpens the claim. Intel's fiscal 2024 10-K went further, calling 18A the first high-volume commercial implementation of gate-all-around transistors and backside power - a sequencing claim about being first to volume, not merely first to demo. Earlier 10-Ks introduced RibbonFET and PowerVia as forthcoming. Tracking that progression in the filings is how you separate roadmap PR from disclosed reality.
For node-watchers, the discipline is to pin each architecture claim to the filing that makes it and watch whether 'will deliver' becomes 'introduced' becomes shipping volume. The 10-K is the record that management signs; read the breakthrough-technology language there rather than from a keynote slide.