From the article:

The renovations are set to cost an estimated $450 million, with $225 million coming from private donations.

Memorial Stadium has undergone some renovations here and there dating back to the 1960s, but one of the areas that has remained untouched is the south end of the stadium. The latest plans call for a complete removal and replacement of the south stadium, making it unavailable to fans for at least the entire 2025 season, and quite possible the 2026 season as well. Included in those renovations are a new seating bowl, loading dock area renovations, new restrooms and concessions, and "vertical transportation opportunities" for fans.

The areas on the east and west side of the stadium will get new restrooms, concessions, and chair back seating while the north stadium will be renovated to expand the existing sports performance areas to be used by all other sports outside of football.

With all the changes outlined, the seating inside Memorial Stadium will undergo a reduction, going from room for 90,000 fans to room for 80,000.

For fans, they will get a refurbished menu at concessions, and will benefit from the field level concourse being connected 360 degrees, while the main level concourse will be connected 270 degrees around the stadium.