Just search the forums, Hub3, Superhub3 etc. Personally I find the Hub3 works fine for the way I use it, apart from the Mac filtering/Timed access which does not work. I have not had any speed (100Mb) issues. The 2.4 and 5Ghz signals cover the house adequately but I do get an occasional glitch which drops some connected devices (No internet connection but still connected to the router wifi) while others stay connected and work ok. I have to reboot the router to re connect when it happens. There are a lot of reports of issues using Modem mode so do a quick search before you use it.
Hub3 firmware updates are rolled out automatically as VM release them in different areas of the country.