MultipartFile missing - version 3.2.1

[zakhrim]

Hi everybody,
I'm upgrading from 3.1.x to 3.2.1 and I can no longer find the class org.springframework.web.multipart.MultipartFile: maybe it has been moved in other artifacts but I can't find which one.

Previously, I only had to import the package

<properties>
        ....
     	<spring.version.min>3.0.0.RELEASE</spring.version.min>
	<spring.version.max>4.0.0.RELEASE</spring.version.max>
	<spring.version>[${spring.version.min},${spring.version.max})</spring.version>
<properties>
.....
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-webmvc</artifactId>
	<version>${spring.version}</version>
</dependency>

Can someone help me? (this is quite urgent as the project must be upgraded but currently it does not even compile)

One more question: apparently version 3.2.x is not back-compatible with 3.1.x. Is that correct? If so, which convention do you use to name spring version (I always assumed you used the Apache one).

Thanks,
Stefano