[eluser]Michael Wales[/eluser]
1. There are always plans for a new version. Although one hasn't been specifically mentioned, many of us guess a new CI will be released after EE2 is released.
2. Bug fixes, jQuery library, CSRF protection - a lot of things "might" be coming down in the next version.
3. Probably not, helpers of this nature are usually provided by the community as they tend to require a particular directory structure - not generic enough for the framework.
4. No projects are included with CI - it's just a framework. But, there are a lot of open source apps out there you can look at, BambooInvoice for example.
Finally, I wouldn't wait to develop your application. CI doesn't go through insane releases that change a ton of things and destroy your application - most of the time, changes are backwards compatible to previous versions.