when will aperture provide RAW support for Olympus EM-5

If the camera is not listed here Mac OS X v10.6: Supported digital camera RAW formats

then Aperture does not support it as this time.

When it will be supported no one here can say, we're all just users here like you. Apple never releases this information before hand.

You can let them know you want the camera supported by going to Aperture->Provide Aperture Feedback.

I've used Adobe's DNG converter for initial Aperture support in the past, but Aperture surprisingly doesn't understand DNGs created from my E-M5 by DNG converter v6.7. Maybe you'll have better luck than me!

—Andreas