At Runefest there was an Insider Session called "Ideas for the Future". The first part of the session was from Mod Jack who talked of skilling reworks for Summoning, Quick guide , Mining, Smithing and Agility.

This thread will outline what he told us. However remember this is not guaranteed to happen. This is what Jagex intends to do currenty but does not mean this will be the end result.

Construction

Instead of having rooms of a fixed size on a grid we would be able to make rooms of various size and shapes and place furniture where we wanted it within a plot. Walls, furniture, skilling equipment. This allows you much more freedom when designing your house.

Want to take the houses out from a pocket dimension and bring them into the world. There will be plots scattered throughout the world. There would be around 20 of them and you would be able to own and build on 5 or 6 of these.

Houses will be displayed in a similar way to farming patches where you only see your own houses in the plots you own and either your friends or random Runescape Accounts players houses in the remaining plots.

Instead of training by destroying and creating furniture Jagex intends for you to build entire houses and gain xp by doing that. The way it would work is an NPC would want a house built Buy RS Gold by you and would give you certain specifications and you would have to build that house for them in one of the plots and then you'd sell the house to the NPC.