The South China Morning Post is reporting that China will unblock some [primarily] US internet services (that are considered politically sensitive) from within the Shanghai free-trade zone.

The government is opening up these sites to allow foreign workers to "live and work happily in the free-trade zone". The hope is that opening up these sites will make the free-trade zone more interesting to foreign companies (in addition to attractive regulations, taxation and limited control). 

Newly available sites are Facebook, Twitter and NY Times.

Source: South China Morning Post