Got conditional acceptance? What is this?

<p>I found out conditional and early decision may be different?
here is the link
[Transcripts</a> -Admissions- Cal Poly](<a href=“http://www.ess.calpoly.edu/_admiss/undergrad/prospective_transcripts.html]Transcripts”>http://www.ess.calpoly.edu/_admiss/undergrad/prospective_transcripts.html)</p>

<p>quote: “*Applicants admitted to Fall Quarter through ‘Regular Decision’ must indicate if they accept or decline our offer of conditional admission through MyCalPoly’s Self-Service Channel on the Accept/Decline link by May 1, 2011. ‘Early Decision’ admits must accept/decline by January 15, 2011.”</p>