Anyone been using this yet?  OTG supported?  I currently have 4.2.4 and have been having a lot of video drop outs with wifi and pretty good performance with otg...just want to make sure I can still use otg if I update.

Thanks,

No problems so far, OTG or WiFi, I actually did WiFi the other day and the video latency was almost un-noticeable.
Latest IOS and Latest DJI Go, running on IPad mini 4 128GB WiFi+Cellular.
Have not tried it at any significant ranges yet, but I am in an area with extremely high WiFi traffic.

Same here, flew my spark in the garage in ATTI mode without any issues.  Testing it outside over the upcoming weekend.

No probs for me

Exact same set up as Grmachine and all is good here, both otg and wifi.

Well, to repeat what everyone else is saying but add a little extra (Kloo Gee), my update worked fine today BUT I'm still not getting an audio Low Battery Warning...just the visual.  I tried it at 30%, 25% and 20% with no audio indication.  This on my iPhone 6S...4.2.6 update.