Well they were saying August, but he pushed it back a couple more times, now it's unknown when, but the owner did come on here to RF.com and post and calmed alot of people down and clarified a few things, was a good thing. But if your in a hurry to get this done, you can go to Glock armorers willing to modify a Glock Bar like mentioned above, more work, but your paying someone to do it, your call.
Polishing will smooth things up like the stacking and such, it won't get the 3.5 lbs but it will make that 7-10 lbs feel so much better.
Josh