It is all right, mate. The ICO-proper is still unscheduled. Utrust.io indicates that the ICO schedule will be announced in the first week of October. We are barely a week left before October hits. Pre-ICO has always been a good indication as to how the ICO proper will fare out. So you better be quick and regularly check the UTRUST website for updates.
Pre-ICO's are usually for big investors.
Small investors like me usually have to wait until the crowdsale.
Some projects are very succesfull without doing a pre-ico. I sometime doesnt see why you need to do a pre-ico.
Some ICO's raise a lot during the Pre-ICO and almost nothing during the ICO :s
Actually, you already answered your own question which is Why they need to do Pre-ICO. It is because their target was to get big investors. That's the purpose of it dude.