Fellas above have answered you perfectly. Still, let me play the broken record. Are you happy with the 1060 ? What is your performance expectation vs what you are getting? If you are satisfied, then you can wait. If you are not, then go for a new product. Tech advances so fast these days. In the same year Nvidia came up with two different tiers of GPUs on the same architecture. So no matter what you buy, there will be a better product couple days later.
To answer your question, both the Ampere and RDNA2 will be significant bump from the respective current gens. RDNA2 will be moving to 7nm+ from RDNA 7nm. Ampere will be jumping to 7nm from 12nm Turing. Look at what AMD achieved from jumping to 7nm with a new architecture. Nvidia with it's superior compression and codecs, pretty noticeable upgrade is expected, specially in the ray tracing department.