Because they told us so - for them to give any meaningful data, they will have to collate info from retailers across the globe and we have only just finished the busiest trade period of the year, give em a chance:
From the latest interim -
The game was released in the United Kingdom in early November 2006 and is
available at most major retailers. Our TV campaign starts in early December.
The game has also been launched in France, Germany, Italy and Australia and will
be launched shortly in South Africa, Nordic territories, Middle Eastern
territories, Portugal and Greece. Tomb Raider will be launched in the US in Q4
2007. We look forward to updating the market towards the end of January.
The DVD games market is showing signs of continued growth and the company is now
concentrating on strategic relationships to licence content for development and
publication next year...
News on the other aspects of the business as I have detailed could be released at any time as far as im aware but the TR update is definitely towards the end of the month