CMS held a webinar on the theme, "Transitional Coverage for Emerging Devices," on February 17. CMS will hold a second webinar on the same theme on Thursday, March 31, at 3 pm ET (12 noon PT).
A February 17 transcript is here.
Note that CMS is consistently using "Transitional Coverage for Emerging Devices" or TCET as a brand name, or programmatic name, but it doesn't have any specific rules or content yet.
For the next, March 31 webinar, here's the email invitation as I received it: