None of the forum volunteers would know the precise timeline. A modem firmware patch has to come from the modem vendor (was Motorola, now Arris) and then be thoroughly evaluated by Charter/TWC/Brighthouse/Spectrum before it gets pushed out to user devices. Spectrum does not buy the SB6190 to lease to their subscribers so there's no compelling need for them to perform that testing any time soon. The elapsed time period usually starts at about six months, but could take two to three times that long when tech is busy merging three cable and internet companies into one with ten times as many problems.
It's not really gonna matter much. The SB6190 uses the Intel Puma 6 chipset which is known to be bad and is currently the subject of a class-action lawsuit.
Major report from last year on this, as well as a link to the Class Action Lawsuit filed to Arris about the isssue.
I post on my off hours, away from work and any statements made are my opinions, and do not necessarily reflect the views and beliefs of Spectrum Communications.