Will the circulating suply on coinmarket cap also get updated with the burning? If not, how can we check how many still are in circulation?
The circulating supply will indeed be updated with the burning on Coinmarketcap. Alternatively, you can also check to see how many tokens are in circulation by consulting Etherscan, specifically the following link: https://etherscan.io/token/0x49aec0752e68d0282db544c677f6ba407ba17ed7 .
Code:
Total Supply: 3,315,371.9999 XBL ($585,279.20)
So currently 0 coins have been burned, correct?
Since this picture in the OP states the same amount (+ the white paper)
https://ip.bitcointalk.org/?u=http%3A%2F%2Fbillionairetoken.com%2Fbitcointalk%2Fcoinfeaturess.png&t=582&c=4e1-aDfaCCcQ0w