If they don't know now, you can almost guaranty they will know by the time of your next court appearance. You should hire a criminal defense lawyer a.s.a.p.
Whitcomb Law Firm, Ltd.
On your return date for supervision, it is not uncommon for the judge to swear you in and ask you whether you have been arrested for any new offenses. If you lie, you open yourself up to more criminal liability. In addition, the DuPage prosecutors are usually have updated criminal histories.
The court will know about your violation one way (they'll check in advance) or the other (the judge wil swear you in and ask you) so get a criminal defense attorney on your side as soon as possible.