Could be that the early ones didn't. But the ECU is -- chip apart -- identical to the 1108 SPI ones.
There are two wires to each coil. Both of the ones that are not light blue (one light blue for each coil) are negative.
On the assumption that the later ECUs have a rev cut (someone will advise) then that, and swapping the chips over, might be a cheaper, simpler, option.
Assuming a sporting application, I'd go for either a standalone ECU or an advanced piggy back rather than the stock ECU (just about everything has a rev cut function).
Given a non-sporting application, I'd spend the money on something more fun!