Terraria 1.4.4 is focused more on balance changes and quality-of-life improvements, and today they've revealed a particularly notable update.
The maximum stack size is getting ten times bigger than its current limit of 999. "Simply put, we are increasing the stack size of nearly every stackable item in the game to 9999," the devs say in the latest monthly update blog post. "Please note that there are some exceptions to this, but only around ten to 15 which had to be kept as-is for mechanical purposes."
1.4.4, or the 'Labour of Love' update is set to arrive sometime "later this year". If you want to know everything that's been confirmed for the update so far, you can check out the under new management).
If you're looking for more sandbox games, you can dig in at that link.