I'm contract so might be different from some of y'all...here's been my experience so far.
A little before the semester ended, I was told they would need my fall grades ASAP, and that attaching an unofficial transcript would be fine. Immediately after my grades posted, I sent my unofficial transcript. A few days after that, I was told my application was complete and that I will be notified late February about an interview in early March. (I've heard we get interviewed after the OOS people)
I have heard on good authority that all in-state and contract students with complete applications will be interviewed.
For the record, I did have quite a few required prereqs in fall, so maybe that's why they asked me to be so on top of it. I have not heard anything about sending my official transcript.