This is the module I created, you can find it on github https://github.com/morrillo/sale_order_stock.git

Thank you ! I give it a try and will give you feedback.

keep in mind the module is for openERP 6.1, have not tried it in OpenERP 7.0

Ok i tried it in v7, it works like a charm after modifying the xpath expression in the view (i put <xpath expr="//field[@name='order_line']/tree//field[@name='price_unit']" position="before"> to make it work)

But what i need is the same info for each "Future Stock Moves" of a product. That way a seller can give to his customer the earlier date for a delivery by knowing precisely his virtual stock day by day. I'm gonna try to adapt your module for this purpose.

For a screenshot of the view => http://tof.canardpc.com/view/f3c4196f-4cff-4f46-89af-34dcfd0f7e56.jpg