It contains saves for both Roche and Iorveth's paths, and their varying end states. It also contains Act I saves from the Witcher 2 : Assassins of Kings that may be used for your own playthroughs through TW2.
Permutations of saves are as follows -
Iorveth's Path :
a)Saskia alive and cured
b)Triss saved
Roche's Path
a)Redania wins out
b)Temeria restored
c)Triss saved
In all the saves I have opted for not killing key characters wherever possible (eg Stennis lives, Henselt lives) so as to wring the most out of the saves in TW3. If you would do things differently, I suggest you use the Act I saves which are devoid of major decisions and at the point where you have to choose between Iorveth and Roche.
EDIT To add, These saves were in turn imported from Witcher 1 on a neutral playthrough - again leaving as many people alive as possible (main antagonist excluded). Also, due to an oversight, I forgot to upload the saves separately. This has now been corrected.
Enjoy the third game.