After some years since the release of the elder scrolls online there have been rumours of a new elder scrolls game:Elder Scrolls VI Argonia.So i was wondering whether we should exepect this game to come out or not.Should we?

No.

Unless you hear news directly from Bethesda, consider it just an internet rumour.

Speculation can be discussed here: http://www.gamesas.com/topic/1540762-official-beyond-skyrim-tes-vi-66/