This was rumored earlier today [New York Times] and [Axios]. Now Confirmed.
President Trump has announced via Twitter that Director of National Intelligence Dan Coats is departing. He will be leaving office on August 15th, 2019.  President Trump has announced the nomination of Representative John Ratcliffe to be the next head of the Office of Director of National Intelligence.

Representative John Ratcliffe is a member of the House Judiciary Committee and House Intelligence Committee.  Ratcliffe is one of only a few people who has seen all of the unredacted DOJ and FBI evidence within the documents congress has previously asked the President to declassify.
Representative John Ratcliffe currently holds a top-level security clearance.  John Ratcliffe is very even tempered albeit direct by natural disposition.
Ratcliffe’s nomination, and confirmation should be unremarkable.
However, due to the information that Ratcliffe already holds about the overall intelligence community operation in 2015 through 2019, we can expect the deepest part of the Deep State to immediately begin a process to impede any confirmation effort.   Ratcliffe is a risk, and he will likely be controversialized in a political effort to block his nomination.
Earlier today Ratcliffe spoke to Maria Bartiromo about ongoing concerns around the DOJ, CIA, and FBI operations in 2016: