Minecraft 1.20.5 Snapshot 23W03B: Patch Notes & How to Play

Minecraft snapshot 23W03B is one of the early development builds for the 1.20.5 "Armored Paws" update. Released by Mojang on January 18, 2023, this snapshot introduced several new features that would shape the final update — including the armadillo, new wolf variants, and the early framework for item components that replaced the old NBT system.

This article covers what snapshots are, how to install 23W03B, the features it introduced, and important precautions you need to take when switching game versions.

What Are Minecraft Snapshots?

Snapshots are early, work-in-progress builds of Minecraft that Mojang releases to the public for testing. They give players a chance to try out upcoming features before the full update launches. Snapshots are released weekly during active development cycles and are numbered by year and week — 23W03B is the second snapshot released in the third week of 2023.

Because snapshots are testing builds, they may contain bugs, performance issues, or incomplete features. Mojang releases them to gather feedback and identify problems before the final release.

How to Install Snapshot 23W03B

Installing a snapshot is straightforward through the official Minecraft Launcher:

1. Open the Minecraft Launcher — Launch the official Minecraft Java Edition launcher on your computer.
2. Go to Installations — Click the "Installations" tab at the top of the launcher.
3. Enable snapshots — Check the box that says "Enable snapshots" or "Enable experimental versions." This makes all available snapshots visible in the version list.
4. Create a new installation — Click "New Installation," select "snapshot 23W03B" from the version dropdown, and give it a name like "1.20.5 Snapshot."
5. Launch — Select your new installation from the Play screen and click "Play."

Alternatively, if you already have a snapshot installation, the launcher will automatically update it to the latest available snapshot version.

Features in Snapshot 23W03B

Mojang released a total of 15 snapshots for the 1.20.5 "Armored Paws" update, and 23W03B was among the earliest. It laid the groundwork for many features that would be refined in later snapshots.

The Armadillo

The armadillo was the marquee mob of the Armored Paws update. Found in savanna and badland biomes, the armadillo is a passive mob that curls into a ball when threatened. Its primary purpose is dropping armadillo scutes, which are used to craft wolf armor.

In snapshot 23W03B, the armadillo had its basic behaviour implemented — wandering, curling up when players or hostile mobs get too close, and uncurling after the threat passes. Later snapshots would refine its spawn rates, scute drop mechanics, and interaction with brushes.

Wolf Armor

Wolf armor was the headline feature of the Armored Paws update. Crafted from armadillo scutes, wolf armour provides protection for your tamed wolves, absorbing damage that would otherwise hurt or kill them. In 23W03B, the basic functionality was introduced — you could craft and equip wolf armour, and it would visually appear on your wolf.

Later snapshots added armour durability, repairing with scutes, and a visual indicator showing how much protection remains.

Nine Wolf Variants

Before the Armored Paws update, wolves in Minecraft all looked the same regardless of biome. Snapshot 23W03B introduced the first biome-specific wolf variants. Over the course of the snapshot cycle, nine total variants were added:

• Pale Wolf — Taiga biome
• Woods Wolf — Forest biome
• Ash Wolf — Snowy Taiga
• Black Wolf — Old Growth Pine Taiga
• Spotted Wolf — Savanna Plateau
• Striped Wolf — Wooded Badlands
• Snowy Wolf — Grove biome
• Rusty Wolf — Sparse Jungle
• Chestnut Wolf — Old Growth Spruce Taiga

Each variant spawns naturally in its respective biome and can be tamed like any other wolf. The variants give each region a distinct feel and reward exploration.

New Advancements

Snapshot 23W03B introduced several new advancements tied to the Armored Paws features:

• "The Whole Pack" — Tame one of each wolf variant. This is a challenging advancement that requires visiting many biomes.
• "Shear Brilliance" — Use shears to remove wolf armour from a wolf, allowing you to reclaim the armour or swap it between wolves.
• "Isn't It Scute?" — Obtain armadillo scutes from an armadillo using a brush.
• "With Great Abandon" — Cure a zombie villager (this already existed but was updated with new criteria).

Technical Changes in 23W03B

Item Components Replacing NBT

One of the most significant technical changes in the 1.20.5 snapshot cycle was the introduction of item components, which gradually replaced the older NBT (Named Binary Tag) system for storing item data. Snapshot 23W03B began this transition by allowing data packs and commands to use the new component system.

Item components are easier to read and write than raw NBT, and they make it simpler for map makers and mod developers to create custom items with specific properties. Instead of buried NBT tags, item properties like damage, enchantments, and custom names are now stored as structured components.

The /transfer Command

Snapshot 23W03B introduced the /transfer command, allowing server operators to transfer players to another server without requiring them to disconnect and reconnect manually. This was a quality-of-life improvement for network servers and mini-game hubs, making it possible to build seamless server networks.

Attribute System Changes

The attribute system underwent significant changes during the 1.20.5 snapshot cycle. In 23W03B, Mojang began restructuring how attributes like movement speed, attack damage, and armour values are stored and applied. The new system uses the item component framework, making attributes more consistent across different item types.

This change primarily affects map makers and data pack creators, who now have more control over attribute modifiers and can apply them more precisely.

How to Play on Snapshot Servers

If you want to play snapshot 23W03B with friends, you have two options:

Host Your Own Server

Download the snapshot server jar from the official Minecraft website or the launcher. Run it on your own machine or a hosting provider. Make sure all players use the same snapshot version to connect.

Join a Public Snapshot Server

Many community-run servers update to the latest snapshots shortly after release. Look for servers advertising that they run snapshot versions. Websites like Minecraft Server List let you filter by version.

At NolimitHost, our Minecraft hosting supports custom JAR files, so you can upload the snapshot server jar and have it running in minutes with DDoS protection included.

World Corruption Warning

This is the most important thing to know about snapshots: never open a world from a newer version in an older version. Once you load a world in snapshot 23W03B, that world's data format is upgraded. Opening it in an older release can corrupt the world, causing chunks to reset, items to disappear, or the world to fail to load entirely.

Best practices for snapshot worlds:

• Always make a backup before launching any snapshot.
• Use a separate world for snapshot testing — don't use your main survival world.
• If you upgrade a world to a snapshot, do not downgrade. Consider it permanently updated.
• Label snapshot worlds clearly in the file name so you don't accidentally open them in the wrong version.

Conclusion

Snapshot 23W03B was an important early build in the Armored Paws update cycle, introducing the armadillo, wolf armour, biome-specific wolf variants, and foundational technical changes like item components and the /transfer command. While later snapshots would refine and expand these features, 23W03B gave players their first look at what 1.20.5 would become.

If you're curious about testing upcoming Minecraft features, installing snapshots is easy through the launcher. Just remember to back up your worlds and never downgrade. Happy testing!