Roku Channel Guide Updates

Is there a way to get an email or other notice from Roku for updates to the Channel Line Up?  I just was scanning all the channels and now see a number of new NBC News channels.  Looking though all the others and it looks like a number of other new channels are now there.

It would be nice to have a place here which lists all the channels, and any "updates" that are happening (additions, removals, changes).

Nice job btw!  Thank you for the new channels!