That's the purpose of this forum, to agree on the features that will make it in to the next version of Social Office.
As for a stable release of 1.5, we are expecting to have one in about 2-3 months. For 1.5, we are going to go straight to EE because we ended up building on Liferay Portal 5.2 EE so it's kind of an awkward in-between scenario.
For Social Office 2.0 Community Edition, we'll build off of 5.3 and take advantage of its new features.
