[claudius]

No. It just means that there are some more events that may occur and may change the probabilities of some events slightly. That is, where before we assumed that decay only occurs through events A and B, with A chosen 45% of the time and B chosen 55% of the time, we now know (assuming all these findings are true) that there are actually B' and B'', chosen 0.001% and 54.999% of the time respectively, which result in the same outcome particle-wise but with take different paths to get there, resulting in different particle properties (momentum, mostly).

For systems using radioactive decay as seed, this should have very little effect, as the involved previously-unknown effects are extremely small and the properties influenced by them are unlikely to be used as a source of randomness anyway.