Microsoft has made available preview editions of the upcoming version of Office...
In a "Customer Preview Fact Sheet":
...customer preview of the new Office — formerly code-named “Office 15”...
…is available as the traditional suite of client applications and as an always up-to-date subscription service called Office 365 Home Premium...
Office Professional Plus 2013 Preview
This traditional client software suite...will be available as a traditional single installation on one machine.
Office 365 Home PremiumNotice the word "client" was used when describing Office Professional Plus 2013 Preview...and "cloud-base subscription service" is used in the description of Office 365 Home Premium.
This cloud-based subscription service...
When I installed Office 365 Home Premium, I did not notice an obvious difference that made me aware that it was not a "client" version (and that it is a "cloud-based subscription service").
I mention this because if you, like me, desire to have the software installed as a client...and presumably all of its features available when offline, and not connected to the internet...this may be as important to you as I believe it will be to me.
Preliminary system requirements for the Preview include the following:
Computer and processor: 1 Ghz or greater x86/x64 Processor with SSE2 instruction set
Memory: 1 GB RAM (32 Bit) / 2 GB RAM (64 Bit)
Hard disk: 3.5 GB free disk space
Operating System: Windows 7 or newer, either 32-bit or 64-bit; Windows 2008R2 or newer with .Net 3.5 or greater. It isn’t possible to install on a PC running Windows XP or Vista. To use with Windows 8 you must be running the Release Preview version or higher...
Graphics: Graphics hardware acceleration requires DirectX10 graphics card and 1024 x 576 resolution
What’s described as "Office 365 ProPlus Preview" (which I assume could be another way of describing "Office Professional Plus 2013 Preview") will allow computers to ""...run this version of Office alongside earlier versions..."