I apparently missed the end of the year sales last year. Are there any plans in the immediate future to have some discount sale. Perhaps MLK day? Looking to purchase a license.
The recent sale was the only sale I've seen in the few years I've been a customer. I'd be surprised if any more are on the horizon. XF is not particulary expensive in any case, and you can get discounts on multiple licenses,
Companies will not usually pre-announce sales because it will stifle current sales. Your best bet is to purchase what you need when you need and be happy, and if a sale arises consider it a bonus.