Yes, that's correct. Part of the SBD (not SP) will be paid out as liquid STEEM (depending on the SBD debt ratio). I decided to add the liquid STEEM in the payout details in the coming days. The 'Steem Info' tab now shows the 'SBD Debt Ratio' and from that derived 'Liquid STEEM Ratio':
If my calculation is correct, we currently get ~ 61.6% from the SBD payout as STEEM ;)