the not-so-simple explanation to this is, in order to keep things interesting, we will always be tweaking our format. japanesepod101 is always in a state of flux. some things will come, somethings will go. i wouldn't be surprised if the intermediate level came back some time in the future. as i see things now, every 6 months there will be little changes. we're always growing and trying to keep everyone at many levels happy, so it's a bit of a balancing act. i can't say specifically that "a new intermediate level will begin in july" but a few new things will start around that time and a few old things may disappear.
i'm not sure if i really answered your question, tho...