I can't see why "... a reseller will NEVER have the latest revision" unless Dell deliberately continues to manufacture earlier revisions just to keep up with orders from resellers. Do they?!
I recently ordered two U2413 monitors from a reseller on condition that they were at least Rev A02. Dell assured him that this would be the case. The monitors were duly shipped to me directly from Dell, not via the reseller, but on arrival they were both Rev A00 (manufactured in August 2013). The reseller took them back. A contact at Dell subsequently emailed the factory to ask about revision numbers but the factory's reply was so vague and ambiguous it was useless for helping to understand how to buy a bug free monitor.