The reason I haven't released any new builds since the 1.12.30 build, is because China has changed the cdma code. I am told that cdma in China is slightly different from the states. I am not sure why they are making all the changes because all of their current devices are gsm. But anyway, the changes have messed up ports that use cdma. The builds work fine, cell service and data work, but the signal bars in the top notification bar do not show up correctly. Instead of 1 signal bar that shows 3g, there are 2, one labeled 1x and another labeled E. Because of that, I haven't released any builds since 1.12.30 even though I have them. The gurus at miui.us who normally hunt around and solve those types of issues have been busy w/ life and work since the holidays and haven't really had a chance to do that. Most of their time has been invested in redoing the website, which is going to look really good btw, and transitioning builds to v4 of miui. As far as GB builds, if you look at the change log, you will notice that China hasn't been doing much to those builds either since that last build for the D1. There have been a few minor bug fixes in a few devices, nothing specific to the Milestone / D1, but maybe 1 or 2 software glitches. I think the GB builds of MIUI are about to stop development or at least only receive minor bug fixes as the devs move on to working with ICS. Obviously the D1 will probably not be making that transition. I am looking at the latest stable version for the milestone (2.3.7c) to see if I can get another build for the D1 out that doesn't have the signal bar issue. It will probably be the last release, but definitely not positive on that. As far as work for me, porting to the D1 is almost 100% automated at this point, but MIUI China has thrown a wrench into things at same time as they are moving on, and probably leaving the Milestone (and thereby the D1) behind.
BTW, if you guys would like the latest development builds, I can release them easily, just be aware of the notification signal bar icons will not show up correctly. I had some testing done to them and cell and data reception worked fine, so they are fully functional.