1) We may choose to do another release in the future to mainly fix any importer issues. We may choose to also fix other bugs in that release. (UBB.classic 6.7.3, for example, will be released in the coming weeks. It's mainly importer fixes, but does include a handful of bugfixes as well.)
2) I can't speculate on dates right now. There are no public dates set beyond the planned development snapshot release in late March. We do want to make sure to hit the "Spring, 2005" date that we've kept saying over and over...