For the foreseeable future, as long as all Outlook 2007 updates are installed, you can use Outlook 2007 to connect to Office 365 Exchange or the new Outlook.com.
How to use Move to Folder commands, Quick Steps, or Run Rules Now to file email messages. Or use fewer folders and Instant search or Search folders to find messages.
How to create a new message using Stationery or any HTML file using the standard commands of More Stationery or Insert > Insert as Text command. You can also use a macro to create the message.
How to configure Outlook so you can send email from other email addresses connected to a Gmail account.
How to copy appointments from several Outlook calendars to print as one calendar. Includes code specific to Exchange server accounts that works with Resource calendars as well as other user's calendars.
How to use a VBA macro to watch Microsoft Outlook's calendar for new appointments and warn you when the start or end times is outside of your working hours.
After installing iCloud, email from iCloud.com and me.com accounts won't send from Outlook.
It's not hard to image this scenario: you create a custom view, everything is just the way you like it. Then you accidentally sort by a different column. Outlook saves the changes and your perfect view is ruined. In the early versions of Outlook, users were presented with a "Do you want to save changes?"
Use VBA to select multiple calendars in overlay mode. Can deselect iCloud calendars using this code. Code Sample included.
Updates and hotfixes for Outlook 2007 that were released in 2012.