This year Samsung has launched a new lineup of Tablets including the top tier - Galaxy Tab S4 but it seems that the company is working on a new tablet with model SM-T387W that has certified by Federal Communications Commission (FCC).
The model number of this table indicates this could possibly be the successor of 2017's Galaxy Tab A 8.0 with model number SM-T380 and SM-T385 for the Wi-Fi-only and 4G LTE variants respectively.
There's a sketch of this tablet has been also published in the certification, showing the back of the tablet including a camera, a 3.5mm headphone jack on the top, speakers on the bottom. The Power button and Volume Rocker are positioned on right left and on the right, there are slots for microSD and SIM card.
Apart from above-mentioned information, there are no specs revealed by the FCC and for its launching, this tablet may go official in the early 2019 including the Wi-Fi and LTE variant of the device.