I'm running the new version of Outlook for Mac  for office 365 subscribers, and I've read where the Office suite will be released as a stand-alone version as well as by subscription in the second half of 2015.

I don't a link to download the install bits if you are not an Office 365 subscriber.

This new version actually works quite well. Allow people to install it as a trial and have it expire with the GA release in 2015.

Allowing non subscribers to test the new Outlook would generate a lot of buzz.

If the rest of the suite performs on par with Outlook, it'll be a solid improvement.