This is why a few attendings told me to stay clear of SDN. You have a bunch of pre-meds who are self-proclaimed political/government/financial guru's simply because they have a 3.5+ GPA and can synthesize tertiary alcohols from butene.
Assume the following numbers have remained roughly constant between 2012-2013
19,517 MD matriculants based on AAMC (2012)
5,986 DO matriculants based on AACOM (2012)
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25,503 total medical students in the USA
26,772 ACGME Residency positions filled (2013) with ~1,000 unfilled
1,766 AOA Residency positions filled (2012) with ~889 unfilled
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28,538 total residency positions filled with ~1,900 unfilled
So with 3 DO schools opening up in 2015-2016: assume each DO school enrolls about 150 students x 3 = 450 students.
When these new schools open up around 2015-2016... so 2016 + 4 years for them to graduate, by 2020: total graduates = total residency positions if we decide to include CaribMD.
I believe there will be plenty of time between 2014 through 2020 for government to act with enough time to increase funding for new residency positions. Not to mention, plenty of open land here in America for new entrepreneurs to open up new hospitals as well.
There is no single way that ACGME/AOA will allow schools to keep being created if it means overflow. On top of funding, there will be mandated decrease in school matriculation as well which will further delay the saturation.
So please ignore dramatic people on SDN. I learned my lesson a long time ago.
I am confident in my reply because I have spoken with medical business men and doctors who are politically involved who share the same opinion.