Is Dojo compatible with the LGPL, and could parts of Dojo be used and licensed under the LGPL later?
Short answer: yes.
Long answer: a combined work may be created out of Dojo that is distributed under the LGPL so long as you abide by the terms of our licenses. Our licenses are more permissive in every way than the (L)GPL, so the restrictions are subsumed by the subsequent restrictions of the (L)GPL. The AFL gives you sub-licensing rights, but the FSF disputes the compatibility of the AFL with the GPL. Therefore, if you choose to accept Dojo as BSD-licensed software and reproduce our copyright statement (listed below), you may use Dojo in your LGPL software.
If you use all or part of Dojo in an (L)GPL work, the copyright statement you must include is:
Copyright (c) 2004-2007, The Dojo Foundation
All Rights Reserved
See also: