Java Edition 1.12.1-pre1

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Minecraft 1.12.1-pre1

Java Edition 1.12.1-pre1.png

Edition	Java Edition
Type	Pre-release
Release date	August 2, 2017
Pre-release for	1.12.1
Downloads	Client (.json) Server
Protocol version	337
Data version	1240
◄◄ 1.12 ◄ 17w31a 1.12.2 ►►

1.12.1-pre1^[1] is the first and only pre-release for Java Edition 1.12.1, which includes minor optimizations.

Contents

1 Fixes
2 Video
3 Trivia
4 References

Fixes[edit]

2 issues fixed
From released versions before 1.12.1

MC-117087 – Class.getSimpleName performance issue with large number of block entities.

From the 1.12.1 development versions

MC-119840 – Diamonds get moved into crafting slots on any chat message.

Video[edit]

Video made by slicedlime:

Trivia[edit]

1.12.1-pre1 was previously removed from the launcher for some time, but was added back in September 2018.

References[edit]

↑ "Minecraft Pre-release 1.12.1-pre1" – Minecraft.net, August 2, 2017

Minecraft: Java Edition versions

Versions

Development cycle

Pre-Classic (2009)
Classic (2009)
Indev (2009–10)
Infdev (2010)
Alpha (2010)
Beta (2010–11)
Full Release (2011–present)

Other updates

April Fools updates

2.0 (2013)
15w14a (2015)
1.RV-Pre1 (2016)
3D Shareware v1.34 (2019)
20w14∞ (2020)

Pre-Classic
Version history
Cave Game	Cave game tech test rd-132211 rd-132328
Minecraft: Order of the Stone	rd-20090515
Minecraft	rd-160052 rd-161348
Minecraft Alpha	mc-161607 mc-161616 mc-161625 mc-161648

Classic
Version history
Early Classic	0.0.2a 0.0.3a 0.0.9a 0.0.10a 0.0.11a 0.0.12a _01 02 03* 0.0.13a _03 0.0.14a _01 03 04* 05* 06 07 08
Multiplayer Test	0.0.15a Multiplayer Test 1 2 3 4 5 6 7 8 _01 _02 _03 0.0.16a _01 02*** 0.0.17a 0.0.18a _01 02 0.0.19a _01 02 03 04 05 06* 0.0.20a _01 02 0.0.21a * _01 0.0.22a* _01 02 03 04 05 0.0.23a _01
Survival Test	0.24_SURVIVAL_TEST _01 02* 03 0.25 SURVIVAL TEST _01 02 03 05 0.26 SURVIVAL TEST 0.27 SURVIVAL TEST
Late Classic	0.28 _01 0.29 _01 02 0.30
Server	1.0 1.1 1.2 1.3 1.4 * 1.4.1 1.5 1.6 1.7 1.8 1.8.1 1.8.2 1.8.3 1.9 1.9.1 1.10 1.10.1

Version history

December 2009	23 1 2 31 1 2
January 2010	04 06 07 09 10 11 13 c 14 22 24 1 2 25 28 29 30 31
February 2010	01 1 2 02 04 1 2 05

Minecraft Indev

February 2010	06 * 07 1 2 12 1 2 13 14 18 19 23

Version history

Minecraft Infdev

February 2010	27 1 2
March 2010	13 16 20 21 25 27 30
April 2010	13 14 15 20
June 2010	07 08 11 15 16 17 1 2 18 (SF1) 24 25 1 2 (SF2) 27 29 30

Version history

v1.0

v1.1

v1.1.0 * (SF9)
v1.1.1 (SS1)
v1.1.2
- _01

v1.2
Halloween Update

v1.2.0	preview

Server

1.0

v1.1

1.2

1.3

1.3
1.3_01

1.4

1.4*
1.4_01

1.5

1.6

1.6	preview Test Build 3

1.7

1.7	preview

1.8
Adventure Update (Part 1)
(Guide)

1.8	preview pre * pre2

1.8.1

1.0
Adventure Update (Part 2)
(Guide)

1.0.0	pre pre2 pre3** pre4* pre5 pre6 RC1 RC2**

1.0.1

1.1
(Guide)

1.1	11w47a 11w48a 11w49a 11w50a 12w01a

1.2
(Guide)

1.2.1	12w03a 12w04a 12w05a* 12w05b 12w06a 12w07a 12w07b 12w08a 1.2

1.2.2
1.2.3
1.2.4
1.2.5

1.3
(Guide)

1.3.1	12w15a 12w16a 12w17a 12w18a 12w19a 12w21a 12w21b * 12w22a 12w23a 12w23b 12w24a 12w25a 12w26a 12w27a 12w30a 12w30b 12w30c 12w30d 12w30e 1.3

1.3.2

1.4
Pretty Scary Update
(Guide)

1.4.2	12w32a 12w34a 12w34b 12w36a 12w37a 12w38a 12w38b 12w39a 12w39b 12w40a 12w40b 12w41a 12w41b 12w42a 12w42b 1.4 1.4.1
1.4.4	1.4.3

1.4.5*

1.4.6**	12w49a 12w50a 12w50b

1.4.7

1.5
Redstone Update
(Guide)

1.5*	13w01a 13w01b 13w02a 13w02b 13w03a** 13w04a 13w05a* 13w05b 13w06a* 13w07a 13w09a 13w09b 13w09c 13w10a 13w10b
1.5.1*	13w11a 13w12~*

1.5.2*

1.6
Horse Update
(Guide)

1.6.1	13w16a* 13w16b* 13w17a 13w18a 13w18b 13w18c 13w19a 13w21a 13w21b 13w22a 13w23a 13w23b* 13w24a 13w24b 13w25a 13w25b 13w25c 13w26a 1.6

1.6.2**

1.6.4	1.6.3*

1.7
The Update that
Changed the World
(Guide)

1.7.2	13w36a 13w36b 13w37a 13w37b 13w38a 13w38b 13w38c* 13w39a 13w39b 13w41a 13w41b* 13w42a 13w42b 13w43a 1.7 1.7.1
1.7.4	13w47a 13w47b 13w47c 13w47d 13w47e 13w48a 13w48b 13w49a 1.7.3

1.7.5

1.7.6	pre1 pre2

1.7.7*
1.7.8
1.7.9

1.7.10	pre1 pre2 pre3 pre4

1.8
Bountiful Update
(Guide)

1.8	14w02a 14w02b 14w02c 14w03a 14w03b 14w04a* 14w04b* 14w05a 14w05b 14w06a 14w06b 14w07a 14w08a 14w10a 14w10b 14w10c* 14w11a 14w11b 14w17a 14w18a 14w18b 14w19a 14w20a 14w20b 14w21a 14w21b 14w25a 14w25b 14w26a 14w26b 14w26c 14w27a 14w27b 14w28a 14w28b 14w29a 14w29b 14w30a 14w30b 14w30c 14w31a 14w32a 14w32b 14w32c 14w32d 14w33a 14w33b 14w33c 14w34a 14w34b 14w34c 14w34d pre1 pre2 pre3
1.8.1	pre1 pre2 pre3 pre4 pre5
1.8.2	pre1 pre2 pre3 pre4 pre5 pre6 pre7

1.8.3
1.8.4
1.8.5
1.8.6
1.8.7
1.8.8
1.8.9

1.9
Combat Update
(Guide)

1.9.2

1.9.3	16w14a 16w15a 16w15b pre1 pre2 pre3

1.9.4

1.10
Frostburn Update
(Guide)

1.10	16w20a 16w21a 16w21b pre1 pre2

1.10.1
1.10.2

1.11
Exploration Update
(Guide)

1.11	16w32a 16w32b 16w33a 16w35a 16w36a 16w38a 16w39a 16w39b 16w39c 16w40a 16w41a 16w42a 16w43a 16w44a pre1
1.11.1	16w50a *

1.11.2

1.12
World of Color Update
(Guide)

1.12	17w06a 17w13a 17w13b 17w14a 17w15a 17w16a 17w16b 17w17a 17w17b 17w18a 17w18b pre1 pre2 pre3 pre4 pre5 pre6 pre7
1.12.1	17w31a pre1
1.12.2	pre1 pre2

1.13
Update Aquatic
(Guide)

1.13	17w43a 17w43b 17w45a 17w45b 17w46a 17w47a 17w47b 17w48a 17w49a 17w49b 17w50a 18w01a 18w02a 18w03a 18w03b 18w05a 18w06a 18w07a 18w07b 18w07c 18w08a 18w08b 18w09a 18w10a 18w10b 18w10c 18w10d 18w11a 18w14a 18w14b 18w15a 18w16a 18w19a 18w19b 18w20a 18w20b 18w20c 18w21a 18w21b 18w22a 18w22b 18w22c pre1 pre2 pre3 pre4 pre5 pre6 pre7 pre8 pre9 pre10
1.13.1	18w30a 18w30b 18w31a 18w32a 18w33a pre1 pre2
1.13.2	pre1 pre2

1.14
Village & Pillage
(Guide)

1.14	18w43a 18w43b 18w43c 18w44a 18w45a 18w46a 18w47a 18w47b 18w48a 18w48b 18w49a 18w50a 19w02a 19w03a 19w03b 19w03c 19w04a 19w04b 19w05a 19w06a 19w07a 19w08a 19w08b 19w09a 19w11a 19w11b 19w12a 19w12b 19w13a 19w13b* 19w14a 19w14b pre1 pre2 pre3 pre4 pre5
1.14.1	pre1 pre2
1.14.2	pre1 pre2 pre3 pre4*
1.14.3	pre1 pre2 pre3 pre4
1.14.4	pre1 pre2 pre3 pre4 pre5 pre6 pre7

1.15
Buzzy Bees
(Guide)

1.15	19w34a 19w35a 19w36a 19w37a 19w38a 19w38b 19w39a 19w40a 19w41a 19w42a 19w44a 19w45a 19w45b 19w46a 19w46b pre1 pre2 pre3 pre4 pre5 pre6 pre7
1.15.1	pre1
1.15.2	pre1 pre2

1.16
Nether Update
(Guide)

1.16*	20w06a 20w07a 20w08a 20w09a 20w10a 20w11a 20w12a 20w13a 20w13b 20w14a 20w15a 20w16a 20w17a 20w18a 20w19a 20w20a 20w20b 20w21a 20w22a pre1 pre2 pre3 pre4 pre5 pre6 pre7 pre8 rc1

1.16.1

1.16.2	20w27a 20w28a 20w29a 20w30a pre1 pre2 pre3 rc1 rc2
1.16.3	rc1
1.16.4	pre1 pre2 rc1
1.16.5	rc1*

1.17
Caves & Cliffs (Part 1)

1.17	20w45a 20w46a 20w48a 20w49a 20w51a 21w03a 21w05a 21w05b 21w06a 21w07a 21w08a 21w08b 21w10a 21w11a 21w13a 21w14a 21w15a 21w16a 21w17a 21w18a 21w19a

1.18
Caves & Cliffs (Part 2)

1.18

Combat Tests

Combat Test 7c	Combat Test 7 Combat Test 7b

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