A little bit of a heads up:
At the moment, the Channel 5 website is still claiming that tonight's eviction show is 90 minutes long (as advertised in the Radio Times), however when I went to record it via my Freeview box it I discovered it was scheduled for 2 hours (still starting at 9 pm), and is called "Big Brother: 4 In, 4 Out". The following BOTS is still 1 hour, but there's no longer any scheduled live feed.
We'll have to see if C5 confirm this later today...