So, I did a little calendar wizardry and have a rough estimate on the full Gen Con announcement and price list based off of how they did things last year:
In 2014, Gen Con began on Thursday, August 13. The full Gen Con announcement and price list was posted on August 7th (took a little forum diving to find that one).
Gen Con 2015 begins on Thursday, July 30, so if they announce things at the same time relative to the start of the con, they will be posting the full list on Friday, July 24th.
Obviously this is only an estimate based off of how they did stuff last year. One reason they may not release it sooner than that is because they don't want to say they will have something at Gen Con and then have it unexpectedly delayed and unavailable. That being said, they did announce the Nightmare and Miss model earlier this year than they did last year, so who knows.
All I know is that I am excited to see all of the goodies that will be waiting to come home from Indy with me