Ann: Results Briefing FY2018, page-9

Yes, many companies don't want to give too much away about specific contracts or product development in case it creates a reaction from competitors, however some simple revenue guidance doesn't give anything away. In my opinion, the reason that they wouldn't give this kind of guidance is because they aren't sure of it themselves (which could be a good or a bad thing), but at least shows that there is a fair amount of risk in the stock. After all, they do claim to already have a substantial number of the world's largest companies using their product, so it becomes a bit tougher to grow from here.