This one is our first post-1.2 beta update and it's largely responding to bug reports and feature suggestions from the past several days. Many thanks for the feedback!
But Chris also added a new monster (the Entropic Esper) and two new spells (Leaping Death and Flower X). The game should probably drop a lot of anvils on you if you rely too heavily on flower-power, but I'm not sure that was implemented.
Update: 1.202 is out now as well, and it fixes a fairly critical bug in 1.201 where interior generation would just kind of call it a day halfway through and not seed unimportant things like some doors, secret mission entrances, npcs into rescue-npc missions, etc.
Update: 1.203 hotfix is out too, and it fixes a bug that can cause doors/vents/holes to not seed in destroyed rooms in some cases.
This is a standard update that you can download through the in-game updater itself, if you already have 0.500 or later. When you launch the game, you'll see the notice of the update having been found if you're connected to the Internet at the time. If you don't have 0.500 or later, you can download that here.