So I ordered my car back in March and last month it moved from Dealer Spec to Order status

And now the dealer tells me 'Unfortunately no information on the Vin Number and build week provided as at this stage. However the production week shown below is week 27.'

What's the diff between build week and production week?

The screenshot she sent me shows :

Planned production week 27.2012

Production ID Week 27 Day 1 Number 5176 Year 2012

Entry Dealer System 15/03/12 Entry FAVAS System 11/05/012

Can I gleam any further info from this?

Thanks
A