Simplify the following text for a Grade 11 native English-speaking person.
Original: There are also four stations , reserved for future service : Volokolamskaya of Tagansko-Krasnopresnenskaya line , Delovoy Tsentr stations of Kalininskaya and Solntsevskaya lines and Park Pobedy of Solntsevskaya line .
Simplified: There are also 4 stations , which are not opened yet : Volokolamskaya of Tagansko-Krasnopresnenskaya line , Delovoy Center of Kalininskaya and Solntsevskaya lines and Park Pobedy of Solntsevskaya line .