While I know they are actively developing it, I do not have any dates myself, so I can only speculate that it might follow a release of UWT-50...perhaps Q1'22 ?
LCC ports are providing network access to the new NMRA LCC standard and thus control of various accessories (Nodes), relieving the DCC from doing it. LCC is based on Events (messages), and divides Nodes to Producers and Consumers (of those Events). It is similar to Pub/Sub messaging principle of MQTT. The LCC network runs over a CAN bus using Cat5e, allowing for very long network runs. It also guarantees that messages are delivered and built in redundancies provide fault tollerance. This has not been possible before with any of the protocols (with DCC you send a message to an accessory and there's no guarantee it'll get there if traffic is congested with other messages). Once LCC accessories are programmed there's no need to have a computer run the layout as all of the accessories can talk to each other, Producers will send Event messages when something happens, and any Consumer that's set to listen for that specific Event message will act, e.g. when a button is pressed have turnout motor control change to diverging route and set a signal to indicate it; or a block occupancy detector can tell a signal to show that next block is occupied, etc). The LCC allows for very complex interlockings all working stand-alone, any Event could be also received by CTC, or other indication panels. But that's just tip of an iceberg, there could be a cascade of Events where a Consumer that originally received some Event then sends an Event message of its own to other Consumers, or even vetos the Event message based on some criteria. You could control illumination on the layout and have rolling day and night based on the Fast Clock, turning streetlights and house lights on in entire town scenes, all with a single Event message...etc. RR-CirKits has been selling LCC nodes for sometime now and the above things are all already possible using their Tower LCC and Signal LCC Nodes. With the addition of TCS LCC Command station, it completes the loop and integrates everything together. Hope this "short" brief gives an idea of what could be done, but the NMRA link has official info and RR-CirKits has plenty of details on their site too. I'm not affiliated with any of those companies - I'm part-taking in the OpenLCB developer group (OpenLCB is a broader protocol and LCC as adopted by NMRA is a subset of it).
