The Boston Skyline is on track to change by 2020.  It will introduce some new players to the top ten and maintain some existing ones.

Curbed just posted a map of the 10 tallest buildings it expects to stand over Boston in 2020:

Credit: Curbed

1. 200 Clarendon
2. Winthrop Square Tower
3. Prudential Center Tower
4. Four Seasons Hotel & Private Residences One Dalton Street
5. Millennium Tower
6. South Station Tower
7. Federal Reserve Bank of Boston
8. One Boston Place
9. One International Place
10. Boston Harbor Garage tower

You can read more about the 10 buildings on Curbed, Boston.