This is an issue I noticed on a cable lineup (Comcast - Digital (94536) CA04683:X). The TruTV channel seems to be changing it's call sign in the next few days, and the json service doesn't have any listings beyond the change.
I investigated a bit, and looks like, via the xmltv service, the station shows up twice once as "truTVHD" (64490) and as "truTVHP" (65717). The latter station is missing from the json listings.
Can this please be looked at?