For Verizon FiOS TV users in the US, a change has been on the cards for some time, with concrete information creeping out at Mobile World Congress in March about trials, with the potential for a Q2 launch. Now DSL Reports has intercepted a copy of a letter to customers who have been put on trial with the new service. This second version of FiOS TV probably looks too much like the old FiOS to do much good for Verizon’s TV numbers right now, which have started to fall, rather than rise over the past quarter, for the first time since 2007. The fundamental delivery system is changing from RF communication using pure QAM to IP, although there is some…