When Acrobat 5.0 launched there were 3 versions of PDF files: 1.1, 1.2 and 1.3, each with a different encryption. So with Acrobat 3.0 one cannot read, eg, PDF 1.3 files. This has to do with the encryption each soft uses: I think Acrobat 4.0 can produce 1.1 and 1.2; Acrobat 5.0, 1.1, 1.2 and 1.3. I dunno how things worked in previous versions of Acrobat.
Now that Acrobat 6.0 launched, do we have a PDF 1.4?
Which is the improvement that’d make the purchase worthwhile?