• New feature - Windows 8 Metro build
• New feature - JsonTextReader automatically reads ISO strings as dates
• New feature - Added DateFormatHandling to control whether dates are written in the MS format or ISO format, with ISO as the default
• New feature - Added DateTimeZoneHandling to control reading and writing DateTime time zone details
• New feature - Added async serialize/deserialize methods to JsonConvert
• New feature - Added Path to JsonReader/JsonWriter/ErrorContext and exceptions with the JSON path of the current position
• New feature - Added collection type to JsonArrayContract
• New feature - Added dictionary key type and dictionary value type to JsonDictionaryContract
• New feature - Added reader/writer specific Formatting, DateFormatHandling and DateTimeZoneHandling to JsonSerializerSettings
• New feature - Added ReadAsDate and ReadAsString to JsonReader
• New feature - Added IgnoreSerializableInterface to DefaultContractResolver
• Change - Dates are now serialized as the ISO format by default
• Change - The ReadAsXXX methods on JsonReader now return null at the end of an array instead of throwing an error
• Change - JsonReaders now to set TokenType to JsonToken.None after finishing content
• Change - Deserializing will fallback to use a private default constructor
• Change - The error message when deserializing a JSON object/array onto the wrong kind of type is more descriptive
• Change - Serializing ISerializable types under partial trust now errors to fix potential security issue
• Fix - Fixed reading scientific notation numbers with no decimal point
• Fix - Fixed LinqBridge collision error in .NET 2.0 by moving types to a different namespace
• Fix - Fixed error when deserializing nullable types with no content
• Fix - Fixed JObject.Keys null reference error when the object has no items
• Fix - Fixed error handling when failing to parse array content
• Fix - Fixed error handling when there are missing required properties
• Fix - Fixed performance issue when building deeply nested JSON to LINQ to JSON objects