Now normally I don't even read their press releases, but here it is:

1. The episode will be split in two and released as two files. There is a good reason for this, see below.
2. Naruto switched formats starting with Ep 54, it is now a wide-screen HD show. In order to accommodate the new wide screen format, Dattebayo will change the codec used in its videos. The new release resolution will be 856x480.

The raws are double episodes so it's true.