About 2 weeks after the release of Sametime 7.5.1, IBM finally published the Software Development Toolkit for Sametime version 7.5.1 on the developerWorks toolkit page.
The file is dated 27th April but it has not shown up on the download page for the past few days.
While the 7.5 SDK can be used with Sametime 7.5.1 in general, the 7.5.1 software development kit should contain some documentation about the new interfaces and extensions as well as the deprecated classes. Can’t tell what’s in there since I am currently waiting for the download to complete, the trans-pacific connection between the US and New Zealand seems a bit busy currently. Interestingly the size of the 7.5.1 SDK is about 90 MB smaller than the 7.5 one.