Guys,
I've just had someone from Apple Store service (Belgium) on the phone.
They confirmed me that people on the chat do not have any information about the shipping, they are only there to assist you if you need some assitance to buy a product.
However, after letting me wait for 10min with a little song, she contacted the center in Ireland and they said that my MacBook Pro should be in Belgium within the next 24 hours and I'll be delivered on Friday or on Monday (can only be confirmed once the laptop is in Belgium).
Take it or leave it but she seems pretty sure about what she was saying and about that the laptop will be in Belgium tomorrow, so I expect some change in status of order by tomorrow ;-)
Also, she confirmed me that the full amount had been reserved on my credit card but it will only be charged once it will be in Belgium for shipping.
With some chance we'll still got them this week ;-)
Cheers!