Will they block the Kindle app?
If it will have access to the full Android Market that would be awesome, especially with the new Video rent/purchase feature (doesn't work for me because I don't have flash
I checked for and update for how many Apps Android has, officially they have 250,000 but Non-official announcement they have around 540,000 Apps. So either it was a typo or the full Market is not open to the Kobo Vox because at least 57% of their Apps are free so that makes around 148,500 officially free apps. But considering the price and most likely flash? (800mhz processor so probably). I think it's a great device.
Here's a Wikipedia
page for Android.