Panasonic GF7 has a Micro Four Thirds lens mount and currently there are 125 native lenses available for this mount.
The latest released lenses that are compatible with the GF7 are the Rokinon 7.5mm f3.5 Fisheye, the Samyang 7.5mm F3.5 Fisheye MFT and the OM SYSTEM 9-18mm f4.0-5.6 II.
Panasonic GF7 doesn't have a sensor based image stabilization system but 37 of these lenses already comes with optical image stabilization.
Since Panasonic GF7 has a Four Thirds sensor, it has a focal length multiplier of 2× so you have to multiply lenses original focal length with this multiplier to find the Full Frame equivalent focal length of the lens when mounted on GF7.
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Panasonic GF7 Lenses with Image Stabilization
Panasonic GF7 Lenses with Weather Sealings