Adobe added camera specific color profiles (Vivid, Natural, Muted, Portrait) for Olympus at the end of 2013. When I first purchased my Olympus Stylus 1, these worked great and all showed up in Lightroom.
In January 2015, Olympus released a firmware upgrade (2.0) for the Stylus 1, which essentially merged it with the Stylus 1s. The EXIF data for the camera model used to read "Stylus 1" but now reads "Stylus 1,1s". With that revision, the camera specific profiles stopped appearing -- only "Adobe Standard" appears.
Is it possible to get the 4 Olympus specific profiles back?
You probably have to wait for an update to Lightroom. In the mean time, make sure you tell Adobe about this issue here: Recently active topics in Photoshop Family about Photoshop Lightroom Where Adobe folks look at bug reports, feature request and such. They don't look at this forum very much and so it would easily get missed. There might be a way to edit the camera profiles to recognize the new firmware version files or to edit your raw files to appear to be done with a camera with an old firmware version but that will take some command line hacking.
Thanks for the quick response. I've reposted the question in the forum you referenced.