This Sony VPL-VW600ES projector comes with a three year parts and labor warranty. That's about as long as one will find in warranties for home theater projectors, including in this over $10,000 price range.
Sony's warranty is pretty standard. They do not offer any loaner or replacement program.
What I still need to clarify relates to the warranties of the included "accessories".
That would be Sony's round 4K Media Player, and the Sony tablet (android). I will update this page, when I have more info.
Although it's not a warranty issue, note that to run the Media Player etc. there are a couple of apps that need to be downloaded, so that you can access the Sony 4K video store, and to control the Media Player from the Sony tablet.