I have downloaded and installed Camera Raw 8.8 and have ORF files that still won't open in Lightroom 5.7. The files were made using the new Olympus E-M5 II, which is on the list of supported cameras. When I launch Lightroom and check the about screen it states it is Lightroom version 5.7 but Camera Raw 8.7 despite my having updated to 8.8. I am running a MacBook Pro with OS 10.7.5 Please advise on how to import and use ORF files in Lightroom.
Lightroom uses a separate module for its RAW than that of the Camera Raw/Bridge/Photoshop combo. You will have to wait until Adobe does an update to Lightroom itself. (It's usually not too far behind.)
Until then, you can convert your ORFs into DNGs using Adobe's DNG Converter for use in Lightroom.
The files were made using the new Olympus E-M5 II, which is on the list of supported cameras.
Yes, that camera is supported by Camera Raw 8.8.
However the "Minimum Lightroom version required" column is blank. Lightroom does not support it yet.
As Warunicorn says, Lightroom does not use the Camera Raw plugin used by Photoshop. It uses its own Raw engine so you need to wait for a separate Lightroom update for that camera to edit Raw files in Lightroom. Or use the DNG converter and work with the DNGs in Lightroom.