Same deal as last week which ended on Father's Day. Confirmed with live chat this one ends September 30.
The G920 wheel comes with a bonus shifter and Forza Horizon 3 pre order. I picked one up last week as it seemed to be a good deal with Forza, you save over $250 off RRP (if you include Forza at its $88 HN price, cheaper elsewhere).
This time there's also the G29 with a bonus shifter (no game) but still decent value.