This is the new main internal wall, showing the downstairs archway (there will be no actual door) leading to the dining area and kitchen and other downstairs rooms. The opening upstairs will lead to the two bedrooms and house bathroom. The stairs will begin more or less where you can see the platform on the bottom right. They will turn twice and end up on a gallery that will face you from this aspect and then turn to form a small study area overlooking the sitting room, which will be in the area from where the photo was taken. (I promise it will all become clear eventually.)
Although work officially stops at the end of this week for the Christmas and New Year holiday and won't resume until the first week in January, Ian and Mick will be coming in some days and begin to put in the floor joists.