Any info on Mk and model release dates available anywhere?

[LRS]

A quick question:

I'm in the process of purchasing an Ibiza Ecomotive Mk3, on an 09 reg which is in very good condition and low miles.

I just wanted to find out when the very last of the Mk3 Ibiza Ecomotive were manufactured as this must be near to being one of the last ones as the Mk4 started coming out at the end of 2008 as I'm aware.

Was there a crossover time when Mk3 Ibiza Ecomotive was still being made at the same time as the new Mk4 Ibiza's with the Mk4 Ecomotive coming out later in 2009?

Any info on Mk and model release dates available anywhere?

Thanks