USCIS has begun returning H-1B application for cases that were not lucky enough to be picked for the random audit. If you do not recall, USCIS received more application in the first week of H-1B availability than it had visas for. Therefore, USCIS pooled all applications received during the first 5 business days and conducted a random audit to select the requisite number of cases.
We began receiving receipts within 2 weeks of the end of the lottery. However, it has taken until today, more than a month after the lottery was conducted for USICS to send back petitions that were not selected. At this point we would certainly state that if you have not heard about your petition the most likely scenario is that your application was not accepted and you will be receiving it back shortly.