you can probably bet your bottom dollar that will be the case - they've set a prededence now and theres no turning back
have a look here -
http://www.thedigitalbits.com/review...hip4disca.html
especially the bit on page 2 that says
"Something that is very much worth noting here is that Peter Jackson, New Line and the DVD producers at Kurtti-Pellerin have already begun planning the DVD releases of the next two films, The Two Towers and The Return of the King. There will indeed be 2-disc theatrical and 4-disc extended versions of each film. More importantly, an overall DVD design philosophy has been worked out for the entire Lord of the Rings Trilogy, so that each 2-disc set will complement the other 2-disc sets, and each 4-disc set will likewise build on the other 4-disc sets. What that means, is that a few years from now, when all of the films are on DVD, you'll be able watch them all straight through without seeing lots of overlapping material. You'll ultimately have a more complete and thorough viewing experience
christ - have we really got at least another two years of this WAITING - i cant cope