Through the recent progress in information oriented society, the required information volume is expanding rapidly. Under these circumstances, high-speed and high-capacity optical communication systems are deployed in the industry. Especially high speed optical transceiver is the key device to realize high-speed system, and the practical development is accelerated in the industry. In order to develop these leading edge products timely, the global standards is strongly demanded in the industry. Based on these backgrounds, Forum standardization bodies such as OIF PLLWG/ IEEE802.3 are energetically creating the standards in the industry. With regard to 100G/400G standardization activities, OIF leads telecom field and IEEE802.3 leads datacom field, and both activities become important recently. In the previous conference, the activities of these standardization bodies till 2012 were reported. In 2013, 100G digitalcoherent transceiver project especially for metro applications had some progress in OIF PLL-WG, whose target form factor is CFP and CFP2. Also 400G transceiver project in datacom field started in IEEE802.3 as 400G Study Group. In this paper, these high-end standardization topics are mainly reviewed and the future direction is also discussed from the technical point of view. In addition, the energy consumption problem for the near future network, triggered by vast increase of the information bandwidth, is also picked up and some related activities are introduced.