The Catechism has this:
1026 By his death and Resurrection, Jesus Christ has "opened" heaven to us. The life of the blessed consists in the full and perfect possession of the fruits of the redemption accomplished by Christ. He makes partners in his heavenly glorification those who have believed in him and remained faithful to his will. Heaven is the blessed community of all who are perfectly incorporated into Christ.
1027 This mystery of blessed communion with God and all who are in Christ is beyond all understanding and description. Scripture speaks of it in images: life, light, peace, wedding feast, wine of the kingdom, the Father's house, the heavenly Jerusalem, paradise: "no eye has seen, nor ear heard, nor the heart of man conceived, what God has prepared for those who love him." [1 Cor 2:9]
Thus the Catholic Church makes no claim about a physical body. We will be "perfectly incorporated into Christ"; as indicated by 1 Cor 15:50–53...
I tell you this, brethren: flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable. Lo! I tell you a mystery. We shall not all sleep, but we shall all be changed, in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we shall be changed. For this perishable nature must put on the imperishable, and this mortal nature must put on immortality. [RSVCE]
Our mortal nature is changed to an immortal, imperishable nature. As no-one knows what that will be like [1 Cor 2:9] we can't say whether it will be a physical body or not. What is certain, however, is that it will be nothing like what we can understand now.