Minecraft Caves and Cliffs Part 1: What Mojang Is Shipping This Summer

Mojang has confirmed that the Caves and Cliffs expansion will not arrive as one giant patch in 2021. The studio is splitting the release into two waves, with the first chunk landing in Summer and the rest pushed back to the holiday season.

The Summer drop still has no fixed date, but Mojang has already published the feature list. The result is leaner than the original 1.17 plan, but still one of the most loaded patches in Minecraft history.

Why Two Updates Instead of One

Caves and Cliffs was always ambitious. Players have been chewing on the announcement since Minecraft Live in late 2020, and Mojang's blog post is essentially a polite way of saying the original scope was too big to ship safely. Splitting it lets the team finish the world generation overhaul without sitting on the rest of the content for another year.

It is not unprecedented either. The Nether Update followed a similar staggered rollout, so longtime players will recognize the pattern.

What Ships in the First Patch

According to Mojang, the Summer release will include:

• Goats
• Axolotls
• Amethyst crystals and geodes
• Spyglass
• Tinted glass
• Copper
• Lightning rods
• Glow squid and glow ink
• Glow lichen
• Powder snow
• Lush cave blocks
• Dripstone cave blocks
• Deepslate and other ore variants
• Multiplayer sleeping rule (Java only)

That is a sizeable shopping list for what is technically half a patch. Mobs, decorative blocks, new tools and quality-of-life tweaks are all in. The biggest absence is the world generation rewrite, which is the headline feature most people associate with Caves and Cliffs.

Note that this list is not exhaustive. Other 1.17 items not specifically named may still slip into the Summer build.

What Comes Later

The second part is scheduled for around the holiday season. That is where the deep terrain changes, the cliffs, the expanded caves and the rest of the world generation work are expected to land. Mojang has not posted patch notes for it yet, but anything announced for 1.17 that did not make the Summer cut is a safe bet for the winter update.

The wait will sting, especially for players who have been refreshing the snapshot page since October. The trade-off is a more stable rollout for a feature set that, on paper, will reshape how Minecraft worlds look for years to come.