Dan Morrill of Google Confirms in a Tweet that there is no minimum spec for a dual-core CPU in Honeycomb. Several websites, including ours here, previously reported a rumor that there was a minimum screen-size and a dual-core chip requirement to run Android 3.0/Honeycomb properly. We can all breathe a collective sigh of relief now, as this rumor has been officially squelched. Of course, that means its possible there could be some manufacturers out there in the future that will try and pigeon-hole Honeycomb onto some old hardware and make it run really crappy, but let's just stick to looking on the bright-side.
Source: @morrildl - Twitter via Engadget