Relax. It will come. The first patch after the initial release always takes the longest. The intent is to fix as many issues as possible on the first pass and then start tweaking the release for maximum potential before the official release to the public.
There's always more going on behind the scenes. People don't realize that no developer is perfect. The tester has no right to complain, as they agreed to unstable features and releases.
Beta Software is custom-designed for Samsung devices it takes time to fix and patch issues plus add features and other things after the Beta program is over you will receive firmware updates on a normal schedule,
These are pre-final release, so definitely beta and updates are definitely more frequent than non-beta firmware. They aren't going to give us every beta test they make due to larger instabilities, just release candidates quality ones.