I received a letter ordering me to attend a hearing later this month. Anyway, reading it over I noticed that under the 'For Probation Office use only' section there were three items checked off; 'Modification' and 'Appeareance'. Wondering if anyone can tell me what this about or what to expect... Wondering if anyone can tell me what this about or what to expect...

Have you done anything wrong ?

Assuming you have done nothing wrong most likely

1. they are going to let you off early
2. they are going to stop having you report and leave it at unsupervised probation.

No I haven't done anything worng. Do you think they'll possibly test me on the date of my hearing?

Normally don't test you at the court, they would do that at the PO office or make a surprise home inspection for that normally.