Can’t be true. I bought a perpetual license just over 12 months ago (as in 5 days over 12 months ago). It still works fine, and it says it’s perpetual.
Edit: and isn’t. They offer a perpetual license here [1]
We managed to negotiate a couple of grand off (including waiving the first year of maintenance) when we needed another license a few weeks ago but yeah it's a bit scummy.
Edit: and isn’t. They offer a perpetual license here [1]
[1]: https://www.altium.com/altium-designer/licensing