Interesting that Microsoft should denigrate Free Software licenses as pathogenic but require that anyone who redistributes the software as source under their new "broader" license "include a complete copy of this License with your distribution." That license includes a provision that "if you sue anyone over patents that you think may apply to the Software for a person's use of the Software, your license to the Software ends automatically."
But since you may not distribute the licensed Microsoft code "in source or object form for commercial purposes under any circumstances," nor use it to run a business, it may be unlikely that such a suit would arise. All in all, I'm not sure who besides companies selling Win CE hardware or software will benefit from this "sharing."
However, if you ever intend to work on any Open Source programming project which might involve similar code, you might want to think twice about downloading any code under the provisions Microsoft lists here: a simple database query can establish whether "Yourname Lastname" had access to the Microsoft-owned code, which could result in legal problems down the road. Even if you never look at the downloaded code, the electronic trail will look like you did -- which is perhaps the most insidious aspect of this version of sharing.