I think that was just Thomas though. Speaking for the amount of new music he has coming up.Somewhen in late 2018, I read (most likely on Facebook) that they (Thomas and Nick) had 4 hours of new music coming up. Since then, Dragon, American Dream, Seven and a couple of singles were released. Quite a lot, but still nowhere near 4 hours in total. Humanity will be a huge album though from what I've heard and will probably take most of the left playtime.
There is also another symphonic work coming + Dragon II (work title - and last time Thomas had about 42 minutes of music on the album, so possibly next time too). And that together with Humanity is even beyond the 4 hours. Also important - he said he scrapped a lot of the tracks on Humanity - by the'll appear in other places. Probably TSFH albums or singles. I'd say producing ao much music at such a high level (with 99.9% of the whole process in his hands - no minions) is basically insane.