Download the E-M1 manual with 4.0 features description.
On November 26 Olympus will release a major firmware update for the E-M1 and E-M5II. And right now you cna download the new updated E-M1 manual which includes the new 4.0 firmware features: olympus.co.jp/en/support/imsg/digicamera/download/manual/omd/man_em1_ver4_e.pdf