I think you are going to be very disappointed. I would love to be wrong, but you have in your hands what you paid for I think minus a couple of events that will reuse the same material. I would say there is a very small chance that there is another planet on one of the DLC's but I'm not holding my breath. Seems to me that the game got castrated about a year ago, and they were hoping for a miracle based on gameplay mechanics... not content.

Again, this "leaker" is fake, the neutering of the game didn't happen. If you look at the grimoire there are already cards for Jupiter and Saturn, we even already play a crucible. Xur refers to the 9 as being Jovian= from Jupiter. The paid DLC does not include any new planets. So my guess is we get some new free content around the Black Friday bunduluru.