Yes, the release number is fine and the product is OK. The version number changed to 10.1.1 (from 2.3.2) to more closely align with the version numbers of ArcGIS Server and all the other "runtime" products. The first paragraph on the Overview "What's new in version 10.1.1" page reads:
"This release synchronizes the version numbers for ArcGIS Runtime SDKs for iOS, Android, Java SE and WPF. This synchronization aims to reflect a commonality across the Runtime SDKs in terms of their capabilities and a unified path of evolution going forward. Also, the Runtime SDKs now begin to share a common C++ runtime. The benefit of adopting this runtime is that, as it evolves, all SDKs will automatically inherit new functionality and capabilities that just couldn't have been possible earlier without a native implementation. New capabilities will adopt similar patterns and practices across all the SDKs allowing you to easily transfer knowledge and expertise from one platform to another, but each SDK will still remain true to its underlying platform, programming language, tools, and workflows."