The upcoming Galaxy Tab S4 is supposed to compete with Apple's new iPad Pro model. According to the latest Chinese leaks, the Tab S4 will get a larger 10.5-inch screen with 16:10 ratio and thin bezels, plus an iris scanner and extended DeX support that can turn the tablet into a desktop computer together with a new Book Cover Keyboard.
https://www.notebookcheck.net/New-Samsung-Galaxy-Tab-4-model-to-include-iris-scanner-and-thinner-bezels.308704.0.html