There's actually 2 types of configuration on 777-300ER.
As of 29JUN11, 77W will start operation on PEK SHA and PEK CAN from 26JUL11 (subject to further changes as this is 2nd postponement).
International service remains on track for PEK FRA from 01SEP11. PEK LHR is currently planned from 01JAN12.