Aperture / Adobe Officially Working on Lightroom Migration Tool
As reported by PetaPixel, Adobe has acknowledged it is in fact working on an Aperture to Lightroom migration tool. There's little detail at the moment. Adobe has put forth a PDF with high level instructions on moving images out of Aperture and into Lightroom for the impatient.
It's honestly nothing we haven't seen already from good blog posts or the Aperture Exporter tool. If you're impatient, I think Aperture Exporter is a better choice now. It will do the heavy lifting for you and take care of color labels and custom metadata.