You may already know that feasycom FSC-BT646 bluetooth module adpot PAN1020 Chipset .It is bluetooth 4.2 .
Recently we had some discussions with the Sales Manager at Panchip about the PAN1020 .
They confirmed in Q2 2019, they should be in production with a Bluetooth 5.1 chipset, which is pin compatible with the PAN1020
As soon as this is available, feasycom would be interested to upgrade the FSC-BT646 module using this chipset,with the long range feature of Bluetooth 5,It is possible to upgrade the product with a greater distance without an additional antenna.
We will keep updated all of you about this.
For more details ,feel free to Contact Feasycom .