I don't think they're incompetent at all. They're not lying neither 'cause the editor is coming out (soon) and that's true. I think they're just buying time as they did since the beginning. As i said i hope to be disproved very soon.
It looks like they are having a hard time with the recent change from FW 6 to 7 and the hardware issues with the Stage, plus the development of the kone and whatever else they have up their sleeves. These guys are a small team and have their hands full is my guess.
The recent stability/quality issues are not good for their business, especially given the highly competitive landscape, and I am sure they are under a lot of pressure internally to get this rig back on track. Even 7.1.3 is still a buggy release, so If I was in their shoes I wouldn't want to repeat/continue the FW7 experience.
Even if it takes more time, and may annoy a few forumites, I'd rather sort out FW7 once and for all, then make sure RM3 and the editor are fully stable before release so they can put this year behind them.
Complaining and calling them incompetent or misleading will do nothing to speed up the process. At the end of the day this is a first world problem fellas.