As a fan user of the video mode, I'd love to use these curved line in camera path. As well, a 360° rotation around a central point would be great !

Since version 1.3 of the photo-video plug-in , the camera path can be in a curved line.

Have these been integrated in SH3D yet, or will they be soon ?

I do not know if this feature (or others) will ever be integrated with the standard version of Sweet Home 3D.