Prepare for 2.3.0 (#583)

Signed-off-by: yhmo <yihua.mo@zilliz.com>

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## milvus-sdk-java 2.3.0 (TBD)
+
+### Feature
+
+- Support Upsert interface
+- New GPU index type(only works when server is GPU mode): GPU_IVF_FLAT, GPU_IVF_PQ
+
+### Deprecated
+
+- No longer support index: ANNOY, RHNSW_FLAT, RHNSW_PQ, RHNSW_SQ
+- No longer support metric: TANIMOTO, SUPERSTRUCTURE, SUBSTRUCTURE
+
 ## milvus-sdk-java 2.2.12 (2023-08-10)
 
 ### Improvement

README.md

@@ -19,6 +19,7 @@ The following table shows compatibilities between Milvus and Java SDK.
 |     2.1      |   2.1.0-beta4    |
 |     2.2.0 ~ 2.2.8      |      2.2.0 ~ 2.2.5       |
 |     >= 2.2.9      |      2.2.7 ~ 2.2.12       |
+|     2.3.0      |      2.3.0       |
 
 ### Install Java SDK
 
@@ -30,14 +31,14 @@ You can use **Apache Maven** or **Gradle**/**Grails** to download the SDK.
         <dependency>
             <groupId>io.milvus</groupId>
             <artifactId>milvus-sdk-java</artifactId>
-            <version>2.2.12</version>
+            <version>2.3.0</version>
         </dependency>
        ```
 
    - Gradle/Grails
 
         ```gradle
-        compile 'io.milvus:milvus-sdk-java:2.2.12'
+        compile 'io.milvus:milvus-sdk-java:2.3.0'
         ```
 
 ### Examples