Not all visa offices send "the letter". I think it's only London. It seems that they have decided that because it's taking a long time, some peoples situations have changed and they are no longer interested and want to cancel and get the fees back at the time London is contacting them for documents so now instead, they get a warning letter, warning, we are about to start processing, this is your time to get a refund. I don't think they send out the letter unless they are actually close to starting processing so if you get the letter, you might as well let your old application roll and forget about the new one. The old applications through London are taking about 3 years on average and since the newest of the old applications are about a year and a half old now, they only have about a year and a half left so for anybody who has a year and a half left of waiting and wants to apply again under the new rules which will probably take around the same time or maybe be around 6 months faster, in my opinion it's a waste of time and effort. On the other hand, for somebody who is from India where the old applications were taking more like 6 years, it might be worth it applying again under the new rules.
