For all of you that are saying Form 3115 is in Home and Business, the fill-in PDF version may be there (with no help from the program), but I highly doubt that TurboTax has all of the required attachments and calculations. Assuming that is the case, effectively you CAN'T do it with TurboTax. Plus TurboTax can't do attachments so it would need to be mailed (and the 3115 is ALSO mailed to a SECOND address as well).
So if 3115 needs to be done to 'catch up' on depreciation, a person REALLY should be going to a tax professional.
