Rumors are it will be a 10 to 16 episode season (I have no idea what a normal production schedule looks like length-wise anyway). Hopefully that means they will have more budget for less episodes this way, and are going for quality over quantity.
So a bit of info about the writing team forming: apparently both a Supergirl writer, and a Legends of Tomorrow writer, are joining the Batwoman team. I think the one from Supergirl was said to have only written a couple of episodes(?), so is quite new, no idea about the one from LoT. Interesting though, wonder if they are going to, or have gotten, a writer from Flash or Arrow - could make a whole set.