This is excellent news! Progress for Acela is always s so piecemeal, with minor improvements in time or reliability, but it is progress.
Acela has been the only way I travel from Boston to NYC since it opened, but the full length is not as good a tradeoff. Between last several years progress, upcoming train sets, and this, maybe it’s time to reconsider. It’ll be too late to help with this summer’s travel, but the following year I’m doing it!