Hello Thijs,
The main changes and new keywords are described in the section "What's new" on the home page. The user manuel of Telemac-3D 7.0 has been added recently on this site and version 7.1 is about to be released also. There is no release notes yet but Sara Pavan's thesis will be also available soon (after the 15th of February) with full explanations on the new advection schemes (part of it was also published in: S. Pavan, Ata R., Hervouet J.-M. (2015), Finite volume schemes and residual distribution schemes for pollutant transport on unstructured grids. Environmental Earth Sciences, 74:7337).
There will be soon a release v7p1r1 to take into account a number of corrections pointed out by the first users.
Last thing: your own corrections are in version 7.1.
With best regards,
Jean-Michel Hervouet