[HDTV1080P]

For the consumer market 1080P HDTV BLU-RAY media and 1080P displays most likely will be the highest quality format available for purchase for around 10 years. Perhaps in 8-10 years we could start seeing announcements for consumer 4K projectors and a coming 4K optical format with a 1TB or more of storage.
Here are a couple of brochures for the Sony SXRD 4K projectors with 8.8 million pixels. These projectors are targeted for the professional Cinema and professional computer graphics market. These SXRD have a resolution of 4096 X 2160 which is much better then 1080P. One can only dream that perhaps in the far future a affordable consumer version might be made. In 10 years we might start up converting old 1080P BLU-RAY discs to 4K resolutions until a 4K format is launched.

Sony SXRD 4K Digital Cinema Spec sheet with a 65.6 foot wide screen
http://bssc.sel.sony.com/BroadcastandBusiness/minisites/SXRD/pdfs/SRXR220R210ProdBroch.pdf

Other Sony SXRD projectors for Computer Graphics and High Quality 4K Video presentations
http://bssc.sel.sony.com/BroadcastandBusiness/docs/brochures/sxrd_large-venue_high-resolution_brochure.pdf