For ALL models. There was a tiny change to the Amp block bias tremolo between the previous beta and this one.
Mark I/II:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/19.0/axefx2_19p00beta1.zip
XL:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/19.0/axefx2_xl_19p00beta1.zip
XL+:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/19.0/axefx2_xlplus_19p00beta1.zip
Note: It's beta. It probably has bugs. It probably doesn't have your favorite drive pedal or a Klon or a button that magically makes you sound like <insert guitar hero here>.
Mark I/II:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/19.0/axefx2_19p00beta1.zip
XL:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/19.0/axefx2_xl_19p00beta1.zip
XL+:
www.fractalaudio.com/downloads/firmware-presets/axe-fx-2/19.0/axefx2_xlplus_19p00beta1.zip
Note: It's beta. It probably has bugs. It probably doesn't have your favorite drive pedal or a Klon or a button that magically makes you sound like <insert guitar hero here>.