its still gonna be written on "about firefox" lawls, most program have their version written on it.
theres this creeping issue on my firefox that i have, when i load a new page it'll get stuck at the "transfering data" stage for a couple of seconds, sometimes reaches minutes, which is annoying.
IE or chrome loads the same page faster. pale moon has this issue as well.
Edit: FF 6.0 is out.