Office 2013 offline installer
Solution 1:
The MSDN Subscription Downloads for Office 2013 (the couple I've checked anyway) are .exe, but given their size (~600–700MB) compared to Office 2010 (2525MB) there must be some form of dynamic download going on.
This is a first open preview, at this stage it is common for not all installation options to be available (equally only "Professional Plus" edition is available).