The xel'naga will not be a playable race in StarCraft II, as only the original three races can be played.
When Blizzard Entertainment employee Karune was asked if there would be any hybrid units in StarCraft II, he replied: "we are planning to explore the mysteries surrounding the Xel'naga for the single player campaign. In the campaign you will encounter several unique units that would not otherwise be seen in multiplayer."[36]
Chris Metzen has confirmed they will be part of the backbone of the StarCraft II trilogy.
As of BlizzCon 2009, Blizzard Entertainment has devised no artwork for the xel'naga.
Aussi, les Protoss aiment toujours les Xel'Naga aparemment donc bon :>