Ssis903+4k

Another thought: The "+" sign could indicate that SSIS 903 includes a specific feature related to 4K, such as a 4K character limit for certain data types, which might be a new feature. For example, if SQL Server 903 (if that's the version) now allows 4000 characters in a text field where before it was limited. So the blog could discuss how SSIS 903 handles larger data sets or supports 4K in terms of data capacity.