I signed a 1 year lease on 5/1 (5/15 - 4/30/16) with the same previsions as the pevious years with the same Automatic Renewal Clause. The only change was the typical increase in rent for the year. Thus far I have paid through Septemeber 2015.
Does this help?
It helps clarify the facts, but it's not good for you.
I think everyone else had been assuming that the renewal that occurred in May 2015 was an auto-renewal and not an entirely new lease. Since you signed a new one-year lease, the auto-renewal provision is irrelevant, and you're on the hook through April 2016, subject to the landlord's obligation to mitigate damages by finding a new tenant. However, as I mentioned in my response to your original post, it sounds like the landlord is letting you buy your way out of the lease for $2k, which is a bargain given what you'd otherwise likely be liable for.
Did you not have any inkling in May that you might be looking to buy a house in the near future? If you did, why did you agree to a one-year lease?