Hello,
Hope everyone is doing good. I heard that an additional two months have been added to the 21 months timeline. What I am about to tell you folks right now is just for the sake of spreading information, please don't consider it as advice. Anyone wishing to take this as advice must also consider the associated risks. I "might" in future do this on my own or with the aid of many individuals who are suffering due to these lengthy time frames. However, before I continue I must tell you that I am a qualified lawyer.
Now coming to the point; the law states that any change in policy or procedural matters does not have a retrospective effect. This means that when I applied for immigration the time frame given to me was 9 months, and that my application "must" be decided in that time frame. Since this delay is directly infringing my many rights, I can bring legal action against the authorities and sue them for damages. An alternative and a much stronger case lies in a class action. This means that a class of individuals such as us can bring a class suit against the authorities. These sort of claims have a high success rate and can result in reforms in law.
Please bear in mind that this is not an advice, but a mere attempt of letting you guys know about your legal rights.