I hope 3d will be full supported, even sbs
My understanding is that it will. The TK800 which is very similar to the HT2550 got a 1.03 update that enabled the manual SBS 3D setting. Not sure if that hit the HT2550 yet though?
Regardless, the biggest issue with 3D on this gen of .47” projectors is that amount of time it takes to engage. I believe the 3D in the HT3550 will be automatic engaged similar to the W1070 and HT2050.
Interestingly 3D works so much better on the 1.4a HDMI port in 1080p in the HT2550 but both the HT3550 ports will be HDMI 2.0 so hopefully the 3D will be smooth