While Steven continues to churn away on ALSA audio and VBI support for the HVR-1800, I have started working on a project to do ALSA audio for the HVR-1600. So if you have an interest in being able to use the raw analog video capabilities for the 1600, stay tuned!
The call for testers for the ClearQAM fixes has been very successful, and I am happy to report that 100% of the people who have done testing have seen a significant improvement in ClearQAM performance, with none reporting a regression. That said, I will be issuing a PULL request this weekend to get the changes into the mainline v4l-dvb tree.
PAL VBI support is still in progress for the em28xx. A remote environment has been provided where I can do debugging/testing, and if all goes well this should go into the mainline in the next couple of weeks.