Yep, and pretty much every mortgage I've had (or seen - I worked at a mortgage company for a while) included this language, and was pretty up front about it. I've never seen terms change (like prepayment penalties, etc), but who you send payments to can change.
ONE time, I had a mortgage sold to another servicer, and that servicer had "each electronic payment requires a $3 fee". THAT one ticked me off. Yes, I can still send paper checks, which are subject to getting 'lost' or 'delayed', but electronic xfer? $3. I did not sign up for that, but have no choice about who services this loan. :/ (refinanced and left - that's about the only recourse you have, and it often involves hefty fees as well)
ONE time, I had a mortgage sold to another servicer, and that servicer had "each electronic payment requires a $3 fee". THAT one ticked me off. Yes, I can still send paper checks, which are subject to getting 'lost' or 'delayed', but electronic xfer? $3. I did not sign up for that, but have no choice about who services this loan. :/ (refinanced and left - that's about the only recourse you have, and it often involves hefty fees as well)