On March 2009 the EUI suite has been selected (together with other 9 instuments) to be part of the scientific payload of Solar Orbiter mission. This important decision was takes after that the implementation of the NASA Sentinels mission was delayed. This lead to a re-definitin of the SO mission, also considering the fact that NASA scheduled the Solar Probe Plus mission in the same time-frame as SO.

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A SO Payload Re-evaluation Panel was convened to consider if the payload previously selected by the Payload Review Committee was still valid given the new mission scenario. The result of the panel was that, with only minor adjustments, the payload selection is still valid. More informations about the selected instruments can be found here
Here below you can find the investigations that have been recommended for preliminary selection: