Hi AcharyaOne,
there is no difference.
We updated the files about an hour ago with support for Maxwell GPUs.

In HiveOS, after creating the flightsheet and uploading the miner, if you want to update the same miner file with exaclty the same name, you need to delete the old one first from the system (or you will get stuck with the old one).

Because it may be difficult to delete this manually for some, we just added a new file with that extra '1' in case of someone needs it for a Maxwell and was using the v1.3n3 from yesterday.

Thanks.
Cheers