I can confirm that is how it is today, and that there are no immediate plans for this to change (so, you won't find as soon as 13 is out and not just the RC, suddenly it costs money/credits; or that within a month, it costs money/credits). I can confirm it's been there for Enscape users for a long time and has not cost money / credits. Longer term, things are always open for change (after all, running servers costs money, so it may depend on how heavily the feature gets used, or how the cost of running the servers changes, or any number of factors both inside and outside our control here at Chaos).