No, but still in storage for a likely launch on a French missile or on VEGA. A vote was deferred at the ministerial meetings at the end of 2016 because the project team hasn't decided on a launcher.
I don't think M45, M51, Micro Vega (Z40C-Z9A-Avum, Z23-Z9A-Avum experiences to much aerodynamic loads) Vega are suitable for Expert that only weights about 500kg. I see three options: Taurus-Lite (Orion 50SXLG-Orion50XL-Orion38), VLM-1 (S50-S50-S44) or a new liquid / hybrid rocket (Electron; North Star LV).
I think VLM-1 or NorthStar LV are the most likely, but they only become available around 2020. So Expert will remain shelved for a while.