Matte,
We haven't fully finished our testing, but from our initial experiences with an earlier beta and some quick testing with the full 2.6 release, everything seems right. JomSocial changed a lot in this release, but the core 'profile' features remain largely the same.. which is good for our integration with them.
If there are any issues, we'll certainly release a revised JomSocial profile plugin. So far, that doesn't seem necessary, but if you run into any issues or have feedback, definitely let us know.
Thanks,
Alex