Despite the physicality of Heaven, we cannot expect carnality or a fleshliness there. 1 Cor 13:12 tells us that we will be face to face with God, and there cannot be any attachment to anything else when we are. Rev 22 tells us that we will have His name inscribed on our foreheads, such will be the communion with the Trinity in Heaven.
Section 1024f of the Catechism tells us that there will be many in Heaven, but it will not be to lose our identity to a corporate body. This does not means that there is no corporate body of the Church Triumphant, as Heaven is the community of all who are perfectly united in Christ, and Jn 15 speaks of us all as branches of Him, the true vine.