Carlson released the 2021 version of their desktop products on Wednesday Sept 23rd. [Update: Carlson 2021 embedded AutoCAD (OEM) was released on 10/21/2020]
The products released on Wednesday included an embedded copy of IntelliCAD 10 and can also run on top of your separately purchased license of AutoCAD 2017-2021. Carlson Survey and Takeoff 2021 with embedded AutoCAD (OEM) are expected to be released within the next few weeks and an update will be posted here.
If you are currently running Carlson and have an active maintenance contract, you are eligible for a free upgrade to 2021. You will need your 2020 serial number and can use this Lookup screen to find your 2021 serial number.