It doesn't say so in the press release, but rumor has it that there is a possability they could extend the episode order. I heard the actors contracts expire on the 18th. Maybe SciFi just needed to announce a renewal to guarantee their continued services and are unsure of how many episdoes they wish to air?
There will still be about a sixth month gap between when filming starts and when the new season airs. So, depending on how you look at it, good news/bad news on the spoiler front. ;)