A repeal of the estate tax is included in the latest Republican tax reform plan, according to Axios in "Here's what's in the GOP tax plan."
The initial plan would double the estate tax exemption immediately and repeal the tax entirely in six years. The plan could change greatly between now and when it passes, if it ever passes.
Many of the proposals included in the plan are controversial even among Republicans.
There is likely to be a lot of lobbying to make changes to the plan. It is still possible that repealing the estate tax could be dropped.
Reference: Axios (Nov. 2, 2017) "Here's what's in the GOP tax plan."