This occured last week...and was lost in the DTV conversion chaos.
Comcast has added WPXA-HD to Channel 812 and WPBA-HD to Channel 816. However, WPBA fell victim to the national APTS agreement, and is off of Comcast analog, at least OTP (I suspect WPBA may still be in analog ITP to prevent political problems...I need confirmation on this). WPBA-SD is still Channel 16 on digital boxes.
Comcast has added WPXA-HD to Channel 812 and WPBA-HD to Channel 816. However, WPBA fell victim to the national APTS agreement, and is off of Comcast analog, at least OTP (I suspect WPBA may still be in analog ITP to prevent political problems...I need confirmation on this). WPBA-SD is still Channel 16 on digital boxes.