Just announced this morning is the second update to Oloneo’s PhotoEngine public beta.  However, this update includes 64 bit support if your system supports 64 bit programs (the download is for both 32 bit and 64 bit systems in one installer).  I was on the 64 bit private beta and it was ROCK SOLID for a beta. Not a single crash despite throwing a few dozen large brackets at it and lots of tonemapping tweaks.

Oloneo reports (and confirmed by users in forums) that it runs well on a dual core Mac using Parallels Desktop 5.

===> DOWNLOAD LINK AND RELEASE NOTES HERE <===

Oh, did I mention yet how FAST this app is?  ;)

HERE’s THE LINK to the review I did when it first released the version 1 beta (in case you missed it).