The Sony VPL-VW1000ES comes with a three year parts and labor warranty in the US, and from a quick visit to the Sony.eu site, looks like 3 years across the "pond", as well.
Interestingly, 3 years is longer than either SIM2 or RUNCO offer on their most similarly priced projectors - the SIM2 Nero 3D2 ($24,900) and the Runco LS10d ($27,995).
I believe you will find that most authorized dealers selling the VPL-VW1000ES will offer additional support and extended warranty packages. Projectors like this Sony VPL-VW1000ES can end up in a $60,000 home theater, or a $500,000 one. People with this level of investment often are looking for extremely fast and proficient support, and often are willing to buy additional programs.
All considered, the longer the "standard" warranty, the less additional any add-on warranty should cost. On that basis, consider this Sony 4K projector's warranty to be a cut above the competitions.