The Samsung Galaxy S27 Ultra could be in for a major shake-up. From a redesigned camera system with one fewer lens to a much bigger battery and a possible return of the Exynos chip, Samsung appears to have several changes planned for its next flagship. The catch? It could also come with a higher price tag.Samsung has yet to confirm the details. Here's what the leaks, certification listings and tipsters suggest so far.Samsung Galaxy S27 Pro or…