There has been a quite cryptic announcement that Bosch will partner with Ram on the work trucks and the Promaster release.
I think it is very important for the Promaster, relative to work storage in the van.
What is known and can be deduced are the following:
The Promaster was shown at the auto shows with Sortimo Globelyst bins and racking, which is a very nice system:
http://international.sortimo.com/Company.2144.0.html
Note the Bosch tool boxes (notable by their color) in the van.
Bosch has licensed the Sortimo box system for their Bosch L-Boxx system:
http://www.boschtools.com/latest/pages/clickandgo.aspx
Many of the power tools can be purchased in the L-Boxx system
Bosch and Sortimo have a joint venture called BS Systems.
It is quite conceivable that in the near future, you will be able to order a Promaster (and Chrysler C/V) with the Sortimo shelving (branded as Bosch) custom fitted at point of sale.
Ranger Design also offers shelving which seem nice:
http://rangerdesigninc.com/vehicles/promaster/
but right now, Sortimo seems the best to me.