Class start date is what I was referring to regarding Humey's post. You can wait 6-9 months on casual.
Back on topic, this year will be interesting. SecAF had eluded to this last year. The ADAF board is meeting in a few weeks. Rumor is that they have @160 applicants, and will be picking up 75 for pilot, the next big number is RPA at 30. If I remember ADAF has 2 boards a yr. which means basically equals out to about 150.
Now you need to include OCS. Let's say 150 for them too. Add in USAFA which can be 500+. That leaves a lot of slots for AFROTC if you go with the winging numbers. They typically wing @ 1100 a yr. Reverse it from the fact that on a good yr 35%+ will not wing you are looking at a large pool size that will get a rated slot.
For all of you 300's please make sure your medical records are in order. This is not a DoDMERB, this is an FAA FC1 that is 3 days long. They will send you to WPAFB. You will take an EKG, have eye/ear/dental exams, and a final physical with a flight surgeon. This is not about the AF waiving you for their requirements like the DoMERB, but the AF saying we can't waive you due to the FAA restrictions that take precedence over DoDMERB.