Will they have an HDMI connector or an easy way to add HDMI?
Will they have 32 megabytes of RAM to enable them to run Linux, like the one David Shah has tweeted about?
Are you dropping the external SRAM in favour of DDR RAM?
Will they be bootable from the flash memory or will being programmed from the co-processor be the only option?
Are you dropping or keeping the Arduino and Raspberry Pi connectors?
I am interested in the modular construction. I have been using the TinyFPGA BX more than my BlackIce II lately, as, while it has a lot less capability than BlackIce, it is easier to build into projects that use custom PCBs like the audio synthesizer and LCD games console I have been working on. The TinyFPGA EX that will also use the ECP5 looks interesting. It will be good to see how your board and Luke's are differentiated and how they differ from other boards based on the ECP5.