In preparation for the upcoming Android 3.0 release, Google has published the preview along with an updated set of SDK Tools for developers. Included is a functional emulator image for Honeycomb. There have been reports that it runs slow. The performance trade-off for the tablet platform may be real, even if there are no actual hardware requirements for Android 3.0. In the blog post, it also specifically notes that Honeycomb will bring optimizations for dual-core platforms: We'll probably see more tidbits about this up to the actual release date.
Don't mean to hijack your thread, but I posted more about it earlier today if anyone is interested (including some tips to speed up the emulation a bit): http://www.androidtablets.net/forum/android-tablet-discussions/6996-android-3-0-honeycomb-preview-sdk-released.html