I signed up for it in the Atlanta market. This is a VERY good deal. All I had was Blast internet, at $39.99/mo.
Here is what I did:
Called Comcast and mentioned the $39.99 "internet plus" promo. Agent checked into it and said I qualified. He said they would ship me the box for free.
I get the box and it is an old school HD box. Activated the box and found that it did indeed include HBO. Note: package is very basic cable with all HBO channels. You also get HBOgo.
Now, since my box was an old dinosaur box, I took it to my local Comcast shop which is very close. They laughed at it and gladly gave me a nice shiny new HD box. Non dvr of course.
Lastly, I thought I would test Comcast out. Never been a fan of their customer service, but I wanted to see if I could get those few channels in HD. Only took one rep to get it added. She did say it was $9.99 a month HD fee, but she waived it for the first 12 months. I verified on my account and sure enough it shows $39.99 including local basic with HD.
Have to say. I am quite pleased with this. This is very aggressive for Comcast to do this. Glad to have HBOgo as well. I'm still a satisfied Dish customer and at this time have no thoughts of leaving. But, if Comcast expands this, it could get ugly for Dish or any other provider for that matter.
Hope this helps for those of you that have this promo available in your market.
Cheers.