Just got this response from Comcast regarding my PS3 inquiry a week or so ago:
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This is in response to your concern regarding HBO GO not being available
in PS3.
With regards to your concern, we apologize that HBO GO is not available
using your Playstation 3 console. Comcast is continually evaluating new
platforms to support for the Online TV Partners like HBOGO, but at this
time have no committed dates to support HBOGO on Roku or PS3. As of this
time HBO GO is already accessible using Xbox 360 and Kindle Fire, but we
still do not have a date on which HBO GO will be available using PS3. We
apologize for this inconvenience.
If you need further assistance, please chat with us via www.comcast.com.
We appreciate you taking the time to contact us.
Thank you for choosing Comcast.
Sincerely,
Nerwin M
Comcast Customer Care Specialist
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Well, at least he appologized... seriously annoying. Why are Comcast the only major cable provider not supporting these other platforms!