Found another 4.0 reference

docs/ebb.html

@@ -128,7 +128,7 @@
           There are, of course, many <a href="EBBReleaseNotes.html">smaller changes</a> in the code between the versions on older EBB firmware and the latest versions. If you are developing new applications with the EBB, we encourage you to update to the newest version. On the other hand, if you are writing new software that targets machines of various ages (for example, new EggBot software), please be aware that many of the machines out there are still using older firmware revisions. 
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-          As we will note in the next section, EBB firmware v3.x labels a <i>transitional</i> version between the v2.x syntax and planned future version syntax. While it maintains compatibility for existing applications that use the EBB (with firmware 2.x), it also introduces changes for compatibility with the 4.x syntax. These include deprecations of some commands and queries. There is also a new "unified" syntax -- disabled by default -- for responses to commands and queries. Enabling this syntax allows one to develop or adapt programs that use the EBB for future compatibility with a future firmware version.
+          As we will note in the next section, EBB firmware v3.x labels a <i>transitional</i> version between the v2.x syntax and planned future version syntax. While it maintains compatibility for existing applications that use the EBB (with firmware 2.x), it also introduces changes for compatibility with the future version syntax. These include deprecations of some commands and queries. There is also a new "unified" syntax -- disabled by default -- for responses to commands and queries. Enabling this syntax allows one to develop or adapt programs that use the EBB for future compatibility with a future firmware version.
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