It seems that sharp eyes have noticed a possible loophole in the Windows Store developer agreement.
In the agreement, you can find the loophole in section G.
This seems to indicate that Microsoft will allow applications licensed under Open Source Iniative (OSI) approved licenses to be distributed via the Windows 8 app store.
As a refresher – Open source development is a development method for software that harnesses the power of distributed peer review and transparency of process. Basically it allows free resuse of core code for the overall benefit of the development community.
Corel (Corel Linux), Sun Microsystems (OpenOffice.org), and IBM (OpenAFS) are high profile examples of open source based software.
It will be interesting to see what impacts this will have going forward.