The Catechism in Questions & Answers

7. Does God also provide revelations about the future?

Yes, God provides revelations about the future: He has promised that Jesus Christ will return (cf. John 14: 3). God will reveal Himself in perfect fashion to those who will be transformed and caught up to Him at His return (cf. 1 Thessalonians 4: 13-18). They will then see Him as He is (cf. 1 John 3: 1-2).

“Behold what manner of love the Father has bestowed on us, that we should be called children of God! Therefore the world does not know us, because it did not know Him. Beloved, now we are children of God; and it has not yet been revealed what we shall be, but we know that when He is revealed, we shall be like Him, for we shall see Him as He is.”
1 John 3: 1-2