Java SE (Java Platform, Standard Edition)

(posting here instead of in the SwingX area on java.net because I assume mere Swing users are interested)

Hello,

You may know about [url https://swingx.dev.java.net/]SwingX, part of Swing labs, an "incubation" project for Swing enhancements (e.g. SwingX features several JXwidgetname classes that bring additional functionality). SwingX is often mentioned on public forums when people look for elaborate components, or simpler API to things that are otherwise possible with Swing but require more custom coding.
Note that this is far from being the single such library, but this seems the like the "most official" one. In particular, as part of what I consider its mission statement on the project's home page, you can read that Many of these features will eventually be incorporated into the Swing toolkit, although API compatibility will not be guaranteed.

I wonder, first, whether this has been the case, and whether some of Swing's passed improvements (JSpinner, RowSorter,... actually I have trouble to name more) have already originated from SwingX or SwingLabs.
Second, what is the status of such inclusion? Are there official statements that such or such feature will be backported from SwingX into JDK7 or 8? In particular, given the latest "phased schedule" planned for JDK7 and 8, how much is to be expected in JDK 7?

One of the reasons to invest in using SwingX widgets, would be the hope that those be incorporated into a future Swing release, providing built-in JDK support with minimal API changes.

Thanks in advance for your insight (for the SwingX insiders), or your opinion (for the mere users).

J.