DATAMONGO-1280 - Updated "What’s new" section in reference documentation.

Original pull request: spring-projects#319.

Author: christophstrobl

src/main/asciidoc/new-features.adoc

@@ -1,6 +1,15 @@
 [[new-features]]
 = New & Noteworthy
 
+[[new-features.1-8-0]]
+== What's new in Spring Data MongoDB 1.8
+
+* `Criteria` offers support for creating `$geoIntersects`.
+* Support http://docs.spring.io/spring/docs/current/spring-framework-reference/html/expressions.html[SpEL expressions] in `@Query`.
+* `MongoMappingEvents` expose the collection name they are issued for.
+* Improved support for `<mongo:mongo-client credentials="..." />`.
+* Improved index creation failure error message.
+
 [[new-features.1-7-0]]
 == What's new in Spring Data MongoDB 1.7