I've recently started helping World Machine as Community Liaison, so will periodically pop into forums / support tickets. This is an easy question, so thanks. :) Yes! World Machine development is very much still going (and has been going for the previous decade). In between the major releases there are several dev releases. Since WM 2.3, there have been over 100 improvements that have come out through a series of dev channel releases that are now all included in the Mailbox Peak release.
We're currently working on addressing some of the bugs that have been reported since the Mailbox Peak release. Hoping to have a bug fix version out in the coming weeks, depending on how easily we can track these bugs down, of course. If anyone is experiencing crashes, send us those crash reports! It's the most helpful thing to tracking down what's going on.
If you purchased or renewed your World Machine license within a calendar year from the date of the upcoming bug-fix release, you'll get that bug-fix release for free. Hope you're enjoying using the new version!
I use the latest 3016 with Geoglyph, but unfortunately this does not work. If WM3 gets a final release, then hopefully Geoglyph will be updated as well. I don't think Tor will be an option soon and all other solutions have their drawbacks as well.
I still use WM extensively, with GeoGlyph. And lately I've developed a workflow where I create the base shapes in World Creator 2 (GPU based, rapid fast, can make iterations in no time up to 16K) and bring it into WM for added effects of erosions, terraces etc which I currently find hard to do in WC2.
That said, I'd love to see WM continue development.
I dont like to use alpha/beta software, I am still waiting for WM 3.0 final release. Why does it take so long? Do you want that your competitors take over WM with their products in the future (TOR from the makers of GeoGlyph and many others)? WM 2.3 is already a nice product but it should be updated to todays workflow and UI and easy import export from engines like Unreal Engine 4.