Just to be clear... neither TiddlyWiki nor TiddlyWiki Classic relies upon *java* to run in the browser. All TiddlyWiki code is written in *javascript*, which is natively supported by nearly all browsers, without any plugins needed.
The only impact of this phase-out of NPAPI support will be for people using TiddlyWiki Classic with the mostly-obsolete TiddlySaver.jar applet to enable local file I/O. However, without TiddlySaver.jar, TiddlyWiki Classic (v2.8.1+) will still be able to save locally, using the fallback "download saver" functionality.
-e