Since many of the changes we make during the beta process lead to save games being incompatible with new versions, we're going to start giving a bit more warning as to when a new one comes out. We estimate the a next patch will go live Tuesday, April 24th. We can't be 100% certain of this date until internal testing is complete, so don't hold us to it 
On an unrelated note, I'd just like to say thank you to everyone who's participated in the beta test, and especially those who have posted detailed information about bugs and gameplay feedback. The quality of discourse in the Sins community is soooo much better than pretty much anywhere else on the internet. You're helping us enormously in making Sins: Rebellion the best Sins game yet!