We had some issues with the download links to sf.net when we announced JBoss Tools 3 CR2.
Now these links have been fixed and to recap here is the way to get JBoss Tools:
Use our update site or get the zips from our Download page
...and if in doubt read our Installing JBoss Tools wiki page.
And just as a final note:
To err is human, to forgive divine
Have fun!
