My Sago Palm houseplant has 2 kinds of leaves. First, it had the more brittle, long dark green leaves. Now it is sending out much longer stemmed fronds with lighter green leaves! Amazing, but I've not seen others like it in garden shops. Any ideas what I've got going on here? I can send a photo if you are interested.
It may not be getting enough light. This can happen to them if the light is not as bright as it likes.