Its not that the new features are causing bugs its just sometimes bug fixes can lead to unexpected bugs other places in the program. Plus there is no way to test every way possible that the code could be used someone will always use it in an unexpected way That is how you find and fix the bugs which is wha they have been trying to do. I usually wait a little while to see how the build is before I update my caps so it dose not cause problems for me.
Plus all the devs Im sure do their best to fix as many bugs as possible before the next build but some of them are really hard to understand when people submit them and some of them are not bugs at all.
I personally say now is the time to release any and all plugins while you are still in beta and have a good sized group of people to test with. What is the point of racing to 1.0 if all the features you want are not going to be in it?