I got 'hands on' with most of these new things on Friday morning here in Helsinki.
The green stick fasteners are for temporarily fixing the rail to a surface (typically vertical). They're not multi-use, but they do have their use. The new rails are predrilled/countersunk to allow you bang in a few screws if required, to be absolutely certain the rail will go nowhere while doing a cut. I don't see myself ever having a use for the feature, but I can definitely see it has high utility for those it's intended to suit.
The handle slot on the rail is brilliantly simple. A good addition for sure for those times you're trying to just get in or out the door without fuss.
The cam clamps fit into 20mm dog holes and work like a champ. They're low profile and will clamp down on a rail from behind and let the body of the TS saws pass over them easily. As a now fairly long time MFT user, they're top of my wish-list. Simple and well made kit. Grips like you know what on an army blanket.
The angled rail guide is interesting. Complicated, more than I'd like to see to be honest, but I guess that's what comes with flexibility in use and lots of design engineering. Something folks might like to hear is that the sprung latch is the same type as on the TSO/Festool rail square. Don't rule out their availability in future in the US in some form.
The quick adjust 90 degree chuck for the new drills (also fits the T18+3) is another nice bit of kit. Depending on street price, I could be tempted to get one also, although not something I'll have regular use for, so it's a maybe purchase.
As for the rail connectors, it's about bloody time. Well made/designed item and I'll glad I'll be able to get rid of the old ones in the near future. Does what it's supposed to without any faffing about.
The OF1010 REBQ was mentioned in the thread. Supposedly available end of this month, but I'd expect August really before they're in stock for retail here in northern Europe. No idea when it'll turn up in the US/RoW. It's what we'd all expect at this stage as a tool. The dual stanchion clamping is welcome, the depth adjuster is like on the OF1400 so that's good too and the dust port will let me move one step closer to ditching the hose ends to suit the old oval connections. All in all, I'll be pleased to have mine delivered as soon as they stock in hand. I got to mess around with one and like it. Very familiar controls and some good improvements on the previous 1000/1010.