springfield - If your GPS is up to date, you'll probably have all the public roads with the exception of maybe Pennecamp, Buttonwood, Tamarind Grove, and St. James. Probably won't show much if anything south of CR466A either. Also, you won't see any of the multi-modal trails on it.
But don't let any of that stop you - probably 90% of the streets will be on it for you. Also consider buying one of the "$5 maps" as it will show you all the current streets as well as the multi-modal trails.
Bill