Tri plans are updated, but they are very small changes, not an overhaul. Some plans have no changes at all, most plans have cosmetic polish, updated comments with more clarity, but you’d find it almost identical. If you are part-way through the plan, I would not change it, wait until you use it for your next race.
The new workouts are exclusively new run workouts, and those new run workouts are only in the run plans at this time. The tri plans will include them later this year. It’s was a half-year process to overhaul the run plans… the tri plans will take up to a year!
David