We don't have official word on any yet, but there will be some, rest assured.
Samsung, LG, Motorola, HTC and Dell are just 5 of the major manufacturers looking to score big in the tablet game. I think once the Flyer comes out by HTC (2.4), that even more people will see how attractive the 7-inch form factor is. I love my Galaxy Tab, but agree that 'official' Honeycomb would be amazing.
Dell is looking to put out a bunch of tablets this year with Honeycomb or even the next version (Ice Cream?), so they might actually be one of the first to do so, which would surprise everyone due to the lack of updated software their devices sport right now.
If I had to bet, I'd say Samsung just because they like to get their products out to the market before anyone else. Either way, there will be 7-inch tablets running Honeycomb soon!