FORECLOSURE

You can find out if the property is in foreclosure by going to the County Recorder's office and using their computer.  The County Recorder may have the information on parcels of property in a grantor/grantee index.  The name of the current owner of the property will be in that index along with the address of the property and its status such as whether a notice of default has been filed or whether it is in foreclosure.  Notice of default is the first step in foreclosure. 

If the house is in foreclosure you should be aware thst, pursuant to federal law, a lender who takes possession of a property or a new owner who buys the building at auction has to let a tenant stay for 90 days from the sale or the remainder of their old lease, whichever period is longer.  The rules are a bit different if someone is buying the property to live in; in that case, they can terminate a lease with 90 days notice.

Note: That is 90 days from the sale date.  So you have at least 3 months plus.

As for your security deposit, the landlord is responsible for it's return.  See if they will apply it to next month's rent; until title officially passes you are still obligated to pay rent to your landlord (since they are still the legal owner of the property).  Again, stay on top of when the sale date is, after that you can stop paying your landlord.