I have no inside info, but recently the VS sale has been a bit of a rolling event. Not quite up to DFS standards, but almost as soon as one ends, another has been announced.
Having said that, there is no guarantee that a particular route, date or class will be included in the next sale.
IMHO, if there is a flight with a carrier that you are happy with at a good price, I would be tempted to grab it; unless tier points are important to you.
Despite the conference in Saudi, oil price rises show no signs of abating, so one would assume that fuel surcharges for new bookings will continue to rise in the near future.
It is a gamble, whatever you decide. Good luck. [8D]
Nick