"forthcoming supplies" is correct and can be used in written English.
It refers to supplies or resources that will be available in the near future. Example: The company assured its clients of forthcoming supplies of raw materials, which helped ease their concerns about production delays.
It is still waiting for a pair of legs to arrive on a forthcoming supply mission, but afterwards the robot should be able to begin to clean handrails, wipe down interior surfaces and other basic jobs.
Nowadays, whole chunks of the forthcoming speech are supplied and obediently printed.
When, in the summer of 1916, the great Battle of the Somme began, supplies were forthcoming.
The hot commodity was also driven by deepening worries over tight global stockpiles and signals from the Organization of Petroleum Exporting Countries that no additional supplies are forthcoming to ease the crunch.
A government official at the Demobilization Centre, Pierre Kugira, also told them that the remaining supplies were forthcoming.
"Building permits are up 60 percent from last year, which would indicate an increase in supply is forthcoming," he said, "but the pent-up demand will dwarf the supply of units coming to market".
So: could a tougher German line, rising above Germany's dependency on Russian energy supply, be forthcoming?
Unless the additional labour supply and work effort forthcoming from the latter outweighs the reductions in labour supply and work effort supplied by the former, it is unclear whether UC will produce a positive benefit-cost ratio.
According to some (e.g., Block 1990, Shoemaker forthcoming), the Inverted Spectrum also supplies an example that falls into this category.
Elsewhere (Grossbard S, Vernon V (forthcoming) Common law marriage, labor supply and time use: a partial explanation for gender convergence in labor supply.
