But, as you say, that doesn't change the fact that between GenCon and September 4 we're likely to get the Raider, Wave 7, and the mystery SKUs, which is something like 10 times faster than the overall average pace of release.
And between September 24th and September 26th we're likely to get 4 new ships, four ships in three days means like FOUR HUNDRED SHIPS A YEAR! No wonder people complain, how can anyone possibly keep up with such a release rate?
If FFG's plans to release the next wave in December hold, most of their releases for this calendar year (two epic ships, two of the three full waves, and the three mystery SKUs) will have occurred in Q3 and Q4. Regardless of what happens in Q4, with eight new SKUs, Q3 2015 will feature the most releases of any quarter in the X-wing game so far.
Or hey, I can cut it up from another perspective: let each year start and end at GenCon, counting GenCon releases as part of the previous year. Year 1 featured three waves and a core set. Year 2 featured two Aces packs, two Epic ships, and two waves. Year 3 featured two waves and one Epic ship. That makes Year 2 (again, measuring anniversary to anniversary) the busiest full year so far.
But just the first half of Year 4 (that is, the six-month period that started immediately after GenCon 2015) will have one Epic ship (the Imperial Assault Carrier), one wave (the SW:Rebels wave), and the mystery SKUs ([redacted]), meaning if FFG manages only one more full wave between January 2016 and GenCon, Year 4 will outpace Year 2 as the game's busiest year.
TL;DR: By the standards of this game, we're getting a lot very quickly. Perhaps you can come up with a reasonable standard that applies to this game by which this summer and fall haven't been busy, but if so you haven't yet mentioned it.
Edited by Vorpal Sword