Well, take it for what it is: Before there was no plan communicated at all post PPC. Now there is. Before, some of us had a feeling that once the Mac's have been fully exploited, the MorphOS saga would end. Now it's confirmed that it won't, MorphOS will continue, even though PPC won't! 
Well, I think its more like f. ex. Itix quite repeatedly said: It's a thing of motivation/situation when it's due. If the ppc Mac field is covered and the team feels like continuing the work, well, what's to do then? Looking for a new target of course. But if they then decide the effort is bigger than the benefit/joy/fun/motivation then it stops there. If in a few years powerful and suited ppc hardware pops out of the nowhere, then that's of course another option.
I think the ideal long term plan is rather as I outlined it at
http://via.i-networx.de/q86.htm - thing is: it requires a helluvalot work. And more important to judge this kind of announcement from a user's POV: Don't fall for pipedreams, use what's available today.
Or even shorter: "Live every day as if it were your last day"
