I remember waiting for nearly a year after the initial announcement to get an RT-N66U (and it took even longer than expected, as Canadian availability only happened a few months after the US release). The specs were slightly below the original product announced (the SD slot was no longer an "official" feature even tho it was still there), but it was still the first "true high end home router" on the market back then. 32 MB of flash? We were used to struggling with getting DD-WRT to fit on those routers with only 4-8 MB of flash back then
I still have mine too, amongst my other development devices. Its cover is permanently unscrewed, as I would often use it to do debugging over its serial port. Now I rarely power it on anymore, its flash is much slower than all other models, making it less interesting as a development/testing platform. The RT-AC56U replaced it for that primary development purpose.