According to a recent article in the Shinjuku Shimbun, there are plans for two 60+ storey apartment buildings in Nishi-Shinjuku. A recent press release by the Real Estate Economic Institute suggests that the project will include two residential towers - a 66-storey and 50-storey tower containing a total of 2,500 apartments.
The Nishi-Shinjuku 3 Chome West District Redevelopment is located directly to the west of Shinjuku Park Tower (52 storeys; 235m). Construction is tentatively scheduled to start in 2019.
Redevelopment discussions began back in 1993, but plans have been changed and delayed over the years. The original plans drawn up for this site in 2000 included four towers - a 77-storey office tower (339m), 2 x 66-storey residential towers (245m) and a 50-storey residential tower (190m). There was even talk of adding a new train station between Shinjuku and Hatsudai Stations on the Keio Line, or extending an underground pedestrian passageway to provide direct access from Shinjuku Station. However, obtaining consensus among landowners and acquiring the necessary parcels proved a difficult task. The project was delayed and eventually abandoned after the economic downturn in 2008.