Right now I see brand new condos offer free rent for 1-2 months from 20% of new releases.

I think the original owner may do this do release of their assets but still be able to use/rent/lease the property.

Every time they ask for anything in the future or demand/request/complain your immediate response after NO should always be "we will be happy to release you from your lease".  

At that point, our personal residence was released by the bank since we had more than 25% equity in the apartment.We bought a SFR a couple weeks ago and the bank used equity in the apartment against the down payment on the house. 

I have a flat 10% PM fee (no money to lease/re-lease) but if I had property 45 minutes away there are two PM firms that would do it for 8%.

Borrower will continue to be obligated under the Note and this Security Instrument unless Lender releases Borrower in writing.If Lender exercises the option to require immediate payment in full, Lender shall give Borrowernotice of acceleration.

Your Attorney may have to file a Court action if the Title Company won't release the funds.

you tell them you will release them but they will be responsible for the rent until a new tenant moves in.

This opens up a huge list of planning options where I think a lot of people are going to start getting family or friends to start paying their big car and student loan payments so that 12 months later they can get a mortgage.This is even more compounded when Fannie Mae also released that they will now consider cash out refinances which typically carried a higher pricing hit (rate) than regular refi's or purchases if the borrower was going to payoff student loans.Now this sounds all great and all since it gives people a bigger doorway out of their non forgiveable debt by refinancing it into their home mortgage.

You will want to ask the bank for spearate releases so you can sell or refinance one without the loan being due.