Why can I only see a limited number of MAX10 devices in Quartus?

I'm using Quartus Prime Version 17.0.2 Build 602 07/19/2017 SJ Standard Edition.

Why can I only see a limited number of speed/temperature grade devices in the Device selection window?

For example, for the 10M08DAU324XXG, I can only see 10M08DAU324I7G and 10M08DAU324C8G listed in available devices. I cannot see other devices such as 10M08DAU324I6G

Thanks for reading