Kid Peligro from www.adcombat.com confirms:

ADCC Committee last release of invitess contain some great names. Included in the list are ADCC veterans Leo Santos and Ricco Rodrigues. Rodrigues is a former ADCC Champion and MMA Champion with great stints in U.F.C. Santos is a former BJJ World Champion that competed in Long Beach and Abu Dhabi. As the date nears it is traditional to have names drop due to injuries and other reasons giving opportunity to new fighters to take their places so  be on the lookout to www.adcombat.com and www.adccbarcelona.com for the latest info on athletes etc.

-76.9kg Leo Santos. Brazil
-87.9kg Bruno Bastos. Brazil
-98.9kg Ricco Rodriguez. USA
+
99kg Karol Bedorf. Poland