The reference to the 'aviation business park' is actually the Aviation Way area where IPECO etc. are based. It does not mean the retail park adjacent to the airport main entrance.
The Olympics is mentioned, with SEN being stated to be convenient for access to the games site.
As far as the infrastructure timatable is concerned, it's fairly obvious that nothing substantial could be built and operational before 2009.
I do agree that much valuable time has been lost in the past couple of years of dithering, but nothing in the brochure contradicts the present situation nor Southend Council's current positive policy towards the airport.
All is not yet lost.