If they truly meant what they said they'd have done or being in the process of doing some of the following:
Native ODF support in Office.
Native support for NFS in Windows.
Native support for UFS or Ext 2/3 (doesn't matter which) in Windows.
Native support for MP4, AAC support in WMP.
Support for Jabber/XMPP in Windows Live Messenger.
POP3/IMAP support in Hotmail.
Make websites that work in all browsers.
Kill VBScript.
Re-enable VBA support in Mac Office.
Provide help to the mono team.
The only thing that I see changing is that they might produce documentation for their proprietary closed format protocols. Otherwise, they will continue on their merry way, creating Windows-only proprietary formats/protocols whilst 'forgetting' to support competing open formats/protocols.